1
|
Qi T, Yang W, Hassan MJ, Liu J, Yang Y, Zhou Q, Li H, Peng Y. Genome-wide identification of Aux/IAA gene family in white clover (Trifolium repens L.) and functional verification of TrIAA18 under different abiotic stress. BMC Plant Biol 2024; 24:346. [PMID: 38684940 PMCID: PMC11057079 DOI: 10.1186/s12870-024-05034-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 04/17/2024] [Indexed: 05/02/2024]
Abstract
BACKGROUND White clover (Trifolium repens L.) is an excellent leguminous cool-season forage with a high protein content and strong nitrogen-fixing ability. Despite these advantages, its growth and development are markedly sensitive to environmental factors. Indole-3-acetic acid (IAA) is the major growth hormone in plants, regulating plant growth, development, and response to adversity. Nevertheless, the specific regulatory functions of Aux/IAA genes in response to abiotic stresses in white clover remain largely unexplored. RESULTS In this study, we identified 47 Aux/IAA genes in the white clover genome, which were categorized into five groups based on phylogenetic analysis. The TrIAAs promoter region co-existed with different cis-regulatory elements involved in developmental and hormonal regulation, and stress responses, which may be closely related to their diverse regulatory roles. Collinearity analysis showed that the amplification of the TrIAA gene family was mainly carried out by segmental duplication. White clover Aux/IAA genes showed different expression patterns in different tissues and under different stress treatments. In addition, we performed a yeast two-hybrid analysis to investigate the interaction between white clover Aux/IAA and ARF proteins. Heterologous expression indicated that TrIAA18 could enhance stress tolerance in both yeast and transgenic Arabidopsis thaliana. CONCLUSION These findings provide new scientific insights into the molecular mechanisms of growth hormone signaling in white clover and its functional characteristics in response to environmental stress.
Collapse
Affiliation(s)
- Tiangang Qi
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Weiqiang Yang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Muhammad Jawad Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jiefang Liu
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yujiao Yang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qinyu Zhou
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Hang Li
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yan Peng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
| |
Collapse
|
2
|
Yuan Y, Tan M, Zhou M, Hassan MJ, Lin L, Lin J, Zhang Y, Li Z. Drought priming-induced stress memory improves subsequent drought or heat tolerance via activation of γ-aminobutyric acid-regulated pathways in creeping bentgrass. Plant Biol (Stuttg) 2024. [PMID: 38509772 DOI: 10.1111/plb.13636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 02/14/2024] [Indexed: 03/22/2024]
Abstract
Recurrent drought can induce stress memory in plants to induce tolerance to subsequent stress, such as high temperature or drought. Drought priming (DP) is an effective approach to improve tolerance to various stresses; however, the potential mechanism of DP-induced stress memory has not been fully resoved. We examined DP-regulated subsequent drought tolerance or thermotolerance associated with changes in physiological responses, GABA and NO metabolism, heat shock factor (HSF) and dehydrin (DHN) pathways in perennial creeping bentgrass. Plants can recover after two cycle of DP, and DP-treated plants had significantly higher tolerance to subsequent drought or heat stress, with higher leaf RWC, Chl content, photochemical efficiency, and cell membrane stability. DP significantly alleviated oxidative damage through enhancing total antioxidant capacity in response to subsequent drought or heat stress. Endogenous GABA was significantly increased by DP through activating glutamic acid decarboxylase activity and inhibiting GABA transaminase activity. DP also enhanced accumulation of NO, depending on NOS activity, under subsequent drought or heat stress. Transcript levels of multiple transcription factors, heat shock proteins, and DHNs in the HSF and DHN pathways were up-regulated by DP under drought or heat stress, but there were differences between DP-regulated heat tolerance and drought tolerance in these pathways. The findings indicate that under recurrent moderate drought, DP improves subsequent tolerance to drought or heat stress in relation to GABA-regulated pathways, providing new insight into understanding of the role of stress memory in plant adaptation to complex environmental stresses.
Collapse
Affiliation(s)
- Y Yuan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - M Tan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - M Zhou
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - M J Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - L Lin
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - J Lin
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Y Zhang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Z Li
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| |
Collapse
|
3
|
Cheng B, Hassan MJ, Peng D, Huang T, Peng Y, Li Z. Spermidine or spermine pretreatment regulates organic metabolites and ions homeostasis in favor of white clover seed germination against salt toxicity. Plant Physiol Biochem 2024; 207:108379. [PMID: 38266560 DOI: 10.1016/j.plaphy.2024.108379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/25/2023] [Accepted: 01/15/2024] [Indexed: 01/26/2024]
Abstract
White clover is widely cultivated as a leguminous forage or ground cover plant worldwide. However, soil salinization decreases its yield and quality. Aims of the present experiment were to elucidate the impact of seed pretreatment with spermidine (Spd) or spermine (Spm) on amylolysis, Na+/K+ accumulation, and metabolic homeostasis during germination. Seed was soaked in distilled water (control), Spd or Spm solution and then germinated under optimal or salt stress conditions for 7 days. Results showed that germination vigor, germination percentage, or seed vigour index of seeds pretreatment with Spd increased by 7%, 11%, or 70% when compared with water-pretreated seeds under salt stress, respectively. Germination percentage or seed vigour index of seeds pretreatment with Spm increased by 17% or 78% than water-pretreated seeds under saline condition, respectively. In response to salt stress, accelerated amylolysis via activation of β-amylase activity was induced by Spd or Spm pretreatment. Spd or Spm pretreatment also significantly enhanced accumulation of diverse amino acids, organic acids, sugars, and other metabolites (putrescine, myo-inositol, sorbitol, daidzein etc.) associated with enhanced osmotic adjustment, antioxidant capacity, and energy supply during germination under salt stress. In addition, Spd or Spm pretreatment not only significantly reduced salt-induced K+ loss and overaccumulation of Na+, but also improved the ratio of K+ to Na+, contributing to Na+ and K+ balance in seedlings. In response to salt stress, seeds pretreatment with Spd or Spm up-regulated transcription level of NHX2 related to enhancement in compartmentation of Na+ from cytoplasm to vacuole, thus reducing Na+ toxicity in cytoplasm. Spm priming also uniquely up-regulated transcription levels of SKOR, HKT1, and HAL2 associated with K+ and Na + homeostasis and decline in cytotoxicity under salt stress.
Collapse
Affiliation(s)
- Bizhen Cheng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Muhammad Jawad Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Dandan Peng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Ting Huang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Yan Peng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.
| | - Zhou Li
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.
| |
Collapse
|
4
|
Qi T, Tang T, Zhou Q, Yang W, Hassan MJ, Cheng B, Nie G, Li Z, Peng Y. Optimization of Protocols for the Induction of Callus and Plant Regeneration in White Clover ( Trifolium repens L.). Int J Mol Sci 2023; 24:11260. [PMID: 37511020 PMCID: PMC10378747 DOI: 10.3390/ijms241411260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/02/2023] [Accepted: 07/04/2023] [Indexed: 07/30/2023] Open
Abstract
White clover is a widely grown temperate legume forage with high nutritional value. Research on the functional genomics of white clover requires a stable and efficient transformation system. In this study, we successfully induced calluses from the cotyledons and leaves of 10 different white clover varieties. The results showed that the callus formation rate in the cotyledons did not vary significantly among the varieties, but the highest callus formation rate was observed in 'Koala' leaves. Subsequently, different concentrations of antioxidants and hormones were tested on the browning rate and differentiation ability of the calluses, respectively. The results showed that the browning rate was the lowest on MS supplemented with 20 mg L-1 AgNO3 and 25 mg L-1 VC, respectively, and the differentiation rate was highest on MS supplemented with 1 mg L-1 6-BA, 1 mg L-1 KT and 0.5 mg L-1 NAA. In addition, the transformation system for Agrobacterium tumefaciens-mediated transformation of 4-day-old leaves was optimized to some extent and obtained a positive callus rate of 8.9% using green fluorescent protein (GFP) as a marker gene. According to our data, by following this optimized protocol, the transformation efficiency could reach 2.38%. The results of this study will provide the foundation for regenerating multiple transgenic white clover from a single genetic background.
Collapse
Affiliation(s)
- Tiangang Qi
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Tao Tang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Qinyu Zhou
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Weiqiang Yang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Muhammad Jawad Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Bizhen Cheng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Gang Nie
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhou Li
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Yan Peng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| |
Collapse
|
5
|
Cheng B, Zhou M, Tang T, Hassan MJ, Zhou J, Tan M, Li Z, Peng Y. A Trifolium repens flavodoxin-like quinone reductase 1 (TrFQR1) improves plant adaptability to high temperature associated with oxidative homeostasis and lipids remodeling. Plant J 2023. [PMID: 37009644 DOI: 10.1111/tpj.16230] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 03/20/2023] [Accepted: 03/26/2023] [Indexed: 06/19/2023]
Abstract
Maintenance of stable mitochondrial respiratory chains could enhance adaptability to high temperature, but the potential mechanism was not elucidated clearly in plants. In this study, we identified and isolated a TrFQR1 gene encoding the flavodoxin-like quinone reductase 1 (TrFQR1) located in mitochondria of leguminous white clover (Trifolium repens). Phylogenetic analysis indicated that amino acid sequences of FQR1 in various plant species showed a high degree of similarities. Ectopic expression of TrFQR1 protected yeast (Saccharomyces cerevisiae) from heat damage and toxic levels of benzoquinone, phenanthraquinone and hydroquinone. Transgenic Arabidopsis thaliana and white clover overexpressing TrFQR1 exhibited significantly lower oxidative damage and better photosynthetic capacity and growth than wild-type in response to high-temperature stress, whereas AtFQR1-RNAi A. thaliana showed more severe oxidative damage and growth retardation under heat stress. TrFQR1-transgenic white clover also maintained better respiratory electron transport chain than wild-type plants, as manifested by significantly higher mitochondrial complex II and III activities, alternative oxidase activity, NAD(P)H content, and coenzyme Q10 content in response to heat stress. In addition, overexpression of TrFQR1 enhanced the accumulation of lipids including phosphatidylglycerol, monogalactosyl diacylglycerol, sulfoquinovosyl diacylglycerol and cardiolipin as important compositions of bilayers involved in dynamic membrane assembly in mitochondria or chloroplasts positively associated with heat tolerance. TrFQR1-transgenic white clover also exhibited higher lipids saturation level and phosphatidylcholine:phosphatidylethanolamine ratio, which could be beneficial to membrane stability and integrity during a prolonged period of heat stress. The current study proves that TrFQR1 is essential for heat tolerance associated with mitochondrial respiratory chain, cellular reactive oxygen species homeostasis, and lipids remodeling in plants. TrFQR1 could be selected as a key candidate marker gene to screen heat-tolerant genotypes or develop heat-tolerant crops via molecular-based breeding.
Collapse
Affiliation(s)
- Bizhen Cheng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Min Zhou
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Tao Tang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Muhammad Jawad Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jianzhen Zhou
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Meng Tan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Zhou Li
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yan Peng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| |
Collapse
|
6
|
Ihtisham M, Hasanuzzaman M, El-Sappah AH, Zaman F, Khan N, Raza A, Sarraf M, Khan S, Abbas M, Hassan MJ, Li J, Zhao X, Zhao X. Primary plant nutrients modulate the reactive oxygen species metabolism and mitigate the impact of cold stress in overseeded perennial ryegrass. Front Plant Sci 2023; 14:1149832. [PMID: 37063220 PMCID: PMC10103648 DOI: 10.3389/fpls.2023.1149832] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 03/06/2023] [Indexed: 06/08/2023]
Abstract
Overseeded perennial ryegrass (Lolium perenne L.) turf on dormant bermudagrass (Cynodon dactylon Pers. L) in transitional climatic zones (TCZ) experience a severe reduction in its growth due to cold stress. Primary plant nutrients play an important role in the cold stress tolerance of plants. To better understand the cold stress tolerance of overseeded perennial ryegrass under TCZ, a three-factor and five-level central composite rotatable design (CCRD) with a regression model was used to study the interactive effects of nitrogen (N), phosphorus (P), and potassium (K) fertilization on lipid peroxidation, electrolyte leakage, reactive oxygen species (ROS) production, and their detoxification by the photosynthetic pigments, enzymatic and non-enzymatic antioxidants. The study demonstrated substantial effects of N, P, and K fertilization on ROS production and their detoxification through enzymatic and non-enzymatic pathways in overseeded perennial ryegrass under cold stress. Our results demonstrated that the cold stress significantly enhanced malondialdehyde, electrolyte leakage, and hydrogen peroxide contents, while simultaneously decreasing ROS-scavenging enzymes, antioxidants, and photosynthetic pigments in overseeded perennial ryegrass. However, N, P, and K application mitigated cold stress-provoked adversities by enhancing soluble protein, superoxide dismutase, peroxide dismutase, catalase, and proline contents as compared to the control conditions. Moreover, N, P, and, K application enhanced chlorophyll a, chlorophyll b, total chlorophyll, and carotenoids in overseeded perennial ryegrass under cold stress as compared to the control treatments. Collectively, this 2-years study indicated that N, P, and K fertilization mitigated cold stress by activating enzymatic and non-enzymatic antioxidants defense systems, thereby concluding that efficient nutrient management is the key to enhanced cold stress tolerance of overseeded perennial ryegrass in a transitional climate. These findings revealed that turfgrass management will not only rely on breeding new varieties but also on the development of nutrient management strategies for coping cold stress.
Collapse
Affiliation(s)
- Muhammad Ihtisham
- College of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin, Sichuan, China
- Key Laboratory of Horticultural Plant Biology, College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, China
| | - Mirza Hasanuzzaman
- Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
| | - Ahmed H. El-Sappah
- College of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin, Sichuan, China
- Department of Genetics, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Fawad Zaman
- Key Laboratory of Horticultural Plant Biology, College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, China
| | - Nawab Khan
- College of Management, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Ali Raza
- Chengdu Institute of Biology, University of Chinese Academy of Sciences, Beijing, China
| | - Mohammad Sarraf
- Department of Horticultural Sciences, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Shamshad Khan
- School of Geography and Resources Science, Neijiang Normal University, Neijiang, China
| | - Manzar Abbas
- College of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin, Sichuan, China
| | - Muhammad Jawad Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Jia Li
- College of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin, Sichuan, China
| | - Xianming Zhao
- College of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin, Sichuan, China
| | - Xin Zhao
- College of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin, Sichuan, China
| |
Collapse
|
7
|
Te X, Hassan MJ, Cui K, Xiao J, Aslam MN, Saeed A, Yang W, Ali S. Effect of different planting pattern arrangements on soil organic matter and soil nitrogen content under a maize/soybean strip relay intercropping system. Front Plant Sci 2022; 13:995750. [PMID: 36589089 PMCID: PMC9798084 DOI: 10.3389/fpls.2022.995750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
Assessing the spatial distribution of organic matter and total nitrogen in soil is essential for management and optimum utilization of fertilizers. Therefore, the present field experiment was conducted to evaluate the impact of different planting pattern arrangements on the spatial distribution of soil total nitrogen and organic matter content under a maize/soybean strip relay intercropping system. The planting was arranged in a manner such that soil sampling could be done from continuous maize/soybean relay strip intercropping (MS1), maize/soybean relay strip intercropping in rotation (MS2), traditional maize/soybean intercropping (MS3), sole maize (M), sole soybean (S), and fallow land (FL) from 2018 to 2020. The results showed significant variations for soil organic matter and total nitrogen content under different planting pattern arrangements of maize and soybean in the strip relay intercropping system. Across all systems, the highest soil organic matter (29.19 g/kg) and total nitrogen (10.19 g/kg) were recorded in MS2. In contrast, the lowest soil organic matter (1.69 g/kg) and total nitrogen (0.64 g/kg) were observed in FL. Soil organic matter and total nitrogen in MS2 increased by 186.45% and 164.06%, respectively, when compared with FL. Soil organic matter and total nitrogen in MS2 increased by 186.45% and 164.06%, respectively, when compared with FL. Furthermore, under MS2, the spatial distribution of soil organic matter was higher in both maize and soybean crop rows as compared with other cropping patterns, whereas the soil total nitrogen was higher under soybean rows as compared with maize in all other treatment. However, correlation analysis of the treatments showed variations in organic matter content. It can be concluded that different planting patterns can have varying effects on soil organic matter and total nitrogen distribution under the strip relay intercropping system. Moreover, it is recommended from this study that MS2 is a better planting pattern for the strip relay intercropping system, which can increase the spatial distribution of soil organic matter and total nitrogen, thereby improving soil fertility, C:N ratio, and crop production. This study will serve as a foundation towards the scientific usage of chemical fertilizers in agricultural sector.
Collapse
Affiliation(s)
- Xiao Te
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Institute of Chinese Medicine Resources and Cultivation, Sichuan Academy of Traditional Chinese Medicine Sciences, Chengdu, China
| | - Muhammad Jawad Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Kuoshu Cui
- Dry Grain Department, Sichuan General Popularization Centre of Agricultural Technique, Chengdu, China
| | - Jiahui Xiao
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, China
| | | | - Amjad Saeed
- Department of Agronomy, The Islamia University of Bahawalpur, Punjab, Pakistan
| | - Wenyu Yang
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Safdar Ali
- Department of Agronomy, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, Pakistan
| |
Collapse
|
8
|
McKnight D, Morales A, Hatchell KE, Bristow SL, Bonkowsky JL, Perry MS, Berg AT, Borlot F, Esplin ED, Moretz C, Angione K, Ríos-Pohl L, Nussbaum RL, Aradhya S, Levy RJ, Parachuri VG, Lay-Son G, de Montellano DJDO, Ramirez-Garcia MA, Benítez Alonso EO, Ziobro J, Chirita-Emandi A, Felix TM, Kulasa-Luke D, Megarbane A, Karkare S, Chagnon SL, Humberson JB, Assaf MJ, Silva S, Zarroli K, Boyarchuk O, Nelson GR, Palmquist R, Hammond KC, Hwang ST, Boutlier SB, Nolan M, Batley KY, Chavda D, Reyes-Silva CA, Miroshnikov O, Zuccarelli B, Amlie-Wolf L, Wheless JW, Seinfeld S, Kanhangad M, Freeman JL, Monroy-Santoyo S, Rodriguez-Vazquez N, Ryan MM, Machie M, Guerra P, Hassan MJ, Candee MS, Bupp CP, Park KL, Muller E, Lupo P, Pedersen RC, Arain AM, Murphy A, Schatz K, Mu W, Kalika PM, Plaza L, Kellogg MA, Lora EG, Carson RP, Svystilnyk V, Venegas V, Luke RR, Jiang H, Stetsenko T, Dueñas-Roque MM, Trasmonte J, Burke RJ, Hurst AC, Smith DM, Massingham LJ, Pisani L, Costin CE, Ostrander B, Filloux FM, Ananth AL, Mohamed IS, Nechai A, Dao JM, Fahey MC, Aliu E, Falchek S, Press CA, Treat L, Eschbach K, Starks A, Kammeyer R, Bear JJ, Jacobson M, Chernuha V, Meibos B, Wong K, Sweney MT, Espinoza AC, Van Orman CB, Weinstock A, Kumar A, Soler-Alfonso C, Nolan DA, Raza M, Rojas Carrion MD, Chari G, Marsh ED, Shiloh-Malawsky Y, Parikh S, Gonzalez-Giraldo E, Fulton S, Sogawa Y, Burns K, Malets M, Montiel Blanco JD, Habela CW, Wilson CA, Guzmán GG, Pavliuk M. Genetic Testing to Inform Epilepsy Treatment Management From an International Study of Clinical Practice. JAMA Neurol 2022; 79:1267-1276. [PMID: 36315135 PMCID: PMC9623482 DOI: 10.1001/jamaneurol.2022.3651] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Importance It is currently unknown how often and in which ways a genetic diagnosis given to a patient with epilepsy is associated with clinical management and outcomes. Objective To evaluate how genetic diagnoses in patients with epilepsy are associated with clinical management and outcomes. Design, Setting, and Participants This was a retrospective cross-sectional study of patients referred for multigene panel testing between March 18, 2016, and August 3, 2020, with outcomes reported between May and November 2020. The study setting included a commercial genetic testing laboratory and multicenter clinical practices. Patients with epilepsy, regardless of sociodemographic features, who received a pathogenic/likely pathogenic (P/LP) variant were included in the study. Case report forms were completed by all health care professionals. Exposures Genetic test results. Main Outcomes and Measures Clinical management changes after a genetic diagnosis (ie, 1 P/LP variant in autosomal dominant and X-linked diseases; 2 P/LP variants in autosomal recessive diseases) and subsequent patient outcomes as reported by health care professionals on case report forms. Results Among 418 patients, median (IQR) age at the time of testing was 4 (1-10) years, with an age range of 0 to 52 years, and 53.8% (n = 225) were female individuals. The mean (SD) time from a genetic test order to case report form completion was 595 (368) days (range, 27-1673 days). A genetic diagnosis was associated with changes in clinical management for 208 patients (49.8%) and usually (81.7% of the time) within 3 months of receiving the result. The most common clinical management changes were the addition of a new medication (78 [21.7%]), the initiation of medication (51 [14.2%]), the referral of a patient to a specialist (48 [13.4%]), vigilance for subclinical or extraneurological disease features (46 [12.8%]), and the cessation of a medication (42 [11.7%]). Among 167 patients with follow-up clinical information available (mean [SD] time, 584 [365] days), 125 (74.9%) reported positive outcomes, 108 (64.7%) reported reduction or elimination of seizures, 37 (22.2%) had decreases in the severity of other clinical signs, and 11 (6.6%) had reduced medication adverse effects. A few patients reported worsening of outcomes, including a decline in their condition (20 [12.0%]), increased seizure frequency (6 [3.6%]), and adverse medication effects (3 [1.8%]). No clinical management changes were reported for 178 patients (42.6%). Conclusions and Relevance Results of this cross-sectional study suggest that genetic testing of individuals with epilepsy may be materially associated with clinical decision-making and improved patient outcomes.
Collapse
Affiliation(s)
| | | | | | | | - Joshua L. Bonkowsky
- Division of Pediatric Neurology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City,Center for Personalized Medicine, Primary Children’s Hospital, Salt Lake City, Utah
| | - Michael Scott Perry
- Jane and John Justin Neuroscience Center, Cook Children’s Medical Center, Fort Worth, Texas
| | - Anne T. Berg
- Department of Neurology, Northwestern University—Feinberg School of Medicine, Chicago, Illinois,COMBINEDBrain, Brentwood, Tennessee
| | - Felippe Borlot
- Section of Neurology, Department of Internal Medicine, University of Manitoba, Winnipeg, Manitoba, Canada,Alberta Children’s Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | | | | | - Katie Angione
- Children’s Hospital Colorado, Aurora,Department of Pediatrics, University of Colorado School of Medicine, Aurora
| | - Loreto Ríos-Pohl
- Clinical Integral de Epilepsia, Facultad de Medicina, Universidad Finis Terrae, Santiago, Chile
| | | | | | | | - Rebecca J. Levy
- Division of Medical Genetics, Lucile Packard Children’s Hospital at Stanford University, Stanford, California
- Division of Child Neurology, Lucile Packard Children’s Hospital at Stanford University, Stanford, California
| | | | - Guillermo Lay-Son
- Genetic Unit, Pediatrics Division, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Miguel Angel Ramirez-Garcia
- Genetics Department, National Institute of Neurology and Neurosurgery, “Manuel Velasco Suárez,” Mexico City, Mexico
| | - Edmar O. Benítez Alonso
- Genetics Department, National Institute of Neurology and Neurosurgery, “Manuel Velasco Suárez,” Mexico City, Mexico
| | - Julie Ziobro
- Department of Pediatrics, University of Michigan, Ann Arbor
| | - Adela Chirita-Emandi
- Genetic Discipline, Center of Genomic Medicine, University of Medicine and Pharmacy “Victor Babes” Timisoara, Timis, Romania
- Regional Center of Medical Genetics Timis, Clinical Emergency Hospital for Children “Louis Turcanu” Timisoara, Timis, Romania
| | - Temis M. Felix
- Medical Genetics Service, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Dianne Kulasa-Luke
- NeuroDevelopmental Science Center, Akron Children’s Hospital, Akron, Ohio
| | - Andre Megarbane
- Department of Human Genetics, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos, Lebanon
- Institut Jerome Lejeune, Paris, France
| | | | | | | | | | - Sebastian Silva
- Child Neurology Service, Hospital de Puerto Montt, Puerto Montt, Chile
| | | | - Oksana Boyarchuk
- I.Horbachevsky Ternopil National Medical University, Ternopil, Ukraine
| | - Gary R. Nelson
- Division of Pediatric Neurology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City
| | - Rachel Palmquist
- Division of Pediatric Neurology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City
| | - Katherine C. Hammond
- Department of Pediatric Neurology, University of Alabama at Birmingham, Birmingham
| | - Sean T. Hwang
- Zucker School of Medicine, Hofstra Northwell, Hempstead, New York
| | - Susan B. Boutlier
- ECU Physician Internal Medicine Pediatric Neurology, Greenville, North Carolina
| | | | - Kaitlin Y. Batley
- Department of Pediatrics and Neurology, UT Southwestern, Dallas, Texas
| | - Devraj Chavda
- SUNY Downstate Health Sciences University, Brooklyn, New York
| | | | | | | | | | - James W. Wheless
- Pediatric Neurology, University of Tennessee Health Science Center, Memphis
- Le Bonheur Comprehensive Epilepsy Program & Neuroscience Institute, Le Bonheur Children’s Hospital, Memphis, Tennessee
| | | | - Manoj Kanhangad
- Department of Paediatrics, Monash University, Clayton, Australia
| | | | | | | | - Monique M. Ryan
- The Royal Children’s Hospital Melbourne, Melbourne, Australia
- Murdoch Children’s Research Institute, Melbourne, Australia
- University of Melbourne, Melbourne, Australia
| | - Michelle Machie
- Department of Pediatrics and Neurology, UT Southwestern, Dallas, Texas
| | - Patricio Guerra
- Universidad San Sebastián, Department of Pediatrics, Medicine School, Patagonia Campus, Puerto Montt, Chile
| | - Muhammad Jawad Hassan
- Department of Biological Sciences, National University of Medical Sciences, Rawalpindi, Pakistan
| | - Meghan S. Candee
- Division of Pediatric Neurology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City
| | - Caleb P. Bupp
- Spectrum Health, West Michigan Helen DeVos Children’s Hospital, Grand Rapids, Michigan
| | - Kristen L. Park
- Children’s Hospital Colorado, Aurora
- Department of Pediatrics, University of Colorado School of Medicine, Aurora
- Department of Neurology, University of Colorado School of Medicine, Aurora
| | - Eric Muller
- Clinical Genetics, Stanford Children’s Health Specialty Services, San Francisco, California
| | - Pamela Lupo
- Division of Neurology, Department of Pediatrics, University of Texas Medical Branch, League City
| | | | - Amir M. Arain
- Division of Epilepsy, Department of Neurology, University of Utah School of Medicine, Salt Lake City
| | - Andrea Murphy
- Mary Bird Perkins Cancer Center, Baton Rouge, Louisiana
| | | | - Weiyi Mu
- Johns Hopkins University, Baltimore, Maryland
| | | | - Lautaro Plaza
- Hospital Materno Perinatal “Mónica Pretelini Sáenz,” Toluca, México
| | | | - Evelyn G. Lora
- Dominican Neurological and Neurosurgical Society, Santo Domingo, Dominican Republic
| | | | | | - Viviana Venegas
- Clínica Alemana de Santiago, Universidad del Desarrollo, Pediatric Neurology Unit, Santiago, Chile
| | - Rebecca R. Luke
- Jane and John Justin Neuroscience Center, Cook Children’s Medical Center, Fort Worth, Texas
| | | | | | | | | | - Rebecca J. Burke
- Division of Medical Genetics, Department of Pediatrics, West Virginia University School of Medicine, Morgantown
- Division of Neonatology, Department of Pediatrics, West Virginia University School of Medicine, Morgantown
| | - Anna C.E. Hurst
- Department of Genetics, University of Alabama at Birmingham, Birmingham
| | | | - Lauren J. Massingham
- Hasbro Children’s Hospital, Providence, Rhode Island
- Alpert Medical School, Brown University, Providence, Rhode Island
| | - Laura Pisani
- Zucker School of Medicine, Hofstra Northwell, Hempstead, New York
- Northwell Health, Medical Genetics, Great Neck, New York
| | | | - Betsy Ostrander
- Division of Pediatric Neurology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City
| | - Francis M. Filloux
- Division of Pediatric Neurology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City
| | - Amitha L. Ananth
- Department of Pediatric Neurology, University of Alabama at Birmingham, Birmingham
| | - Ismail S. Mohamed
- Department of Pediatric Neurology, University of Alabama at Birmingham, Birmingham
| | - Alla Nechai
- Neurology Department, Kiev City Children Clinical Hospital No. 1, Kyiv City, Ukraine
| | - Jasmin M. Dao
- Adult and Child Neurology Medical Associates, Long Beach, California
- Miller Children’s Hospital, Long Beach, California
| | - Michael C. Fahey
- Department of Paediatrics, Monash University, Clayton, Australia
| | - Ermal Aliu
- Department of Genetics, Penn State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania
| | - Stephen Falchek
- Nemours Children’s Hospital, Wilmington, Delaware
- Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Craig A. Press
- Children’s Hospital Colorado, Aurora
- Department of Pediatrics, University of Colorado School of Medicine, Aurora
- Department of Neurology, University of Colorado School of Medicine, Aurora
| | - Lauren Treat
- Children’s Hospital Colorado, Aurora
- Department of Pediatrics, University of Colorado School of Medicine, Aurora
- Department of Neurology, University of Colorado School of Medicine, Aurora
| | - Krista Eschbach
- Children’s Hospital Colorado, Aurora
- Department of Pediatrics, University of Colorado School of Medicine, Aurora
- Department of Neurology, University of Colorado School of Medicine, Aurora
| | - Angela Starks
- Children’s Hospital Colorado, Aurora
- Department of Pediatrics, University of Colorado School of Medicine, Aurora
- Department of Neurology, University of Colorado School of Medicine, Aurora
| | - Ryan Kammeyer
- Children’s Hospital Colorado, Aurora
- Department of Pediatrics, University of Colorado School of Medicine, Aurora
- Department of Neurology, University of Colorado School of Medicine, Aurora
| | - Joshua J. Bear
- Children’s Hospital Colorado, Aurora
- Department of Pediatrics, University of Colorado School of Medicine, Aurora
- Department of Neurology, University of Colorado School of Medicine, Aurora
| | - Mona Jacobson
- Children’s Hospital Colorado, Aurora
- Department of Pediatrics, University of Colorado School of Medicine, Aurora
- Department of Neurology, University of Colorado School of Medicine, Aurora
| | - Veronika Chernuha
- Pediatric Neurology Institute, “Dana-Dwek” Children’s Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | | | - Kristen Wong
- Division of Pediatric Neurology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City
| | - Matthew T. Sweney
- Division of Pediatric Neurology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City
| | - A. Chris Espinoza
- Division of Pediatric Neurology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City
| | - Colin B. Van Orman
- Division of Pediatric Neurology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City
| | - Arie Weinstock
- Division of Child Neurology, Department of Neurology, University at Buffalo, Buffalo, New York
- Oishei Children’s Hospital, Buffalo, New York
| | - Ashutosh Kumar
- Department of Pediatrics and Neurology, Penn State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania
| | - Claudia Soler-Alfonso
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | | | - Muhammad Raza
- Nishtar Medical University, Multan, Punjab, Pakistan
| | | | - Geetha Chari
- SUNY Downstate Health Sciences University, Brooklyn, New York
- Kings County Hospital Center, Brooklyn, New York
| | - Eric D. Marsh
- Division of Child Neurology, Departments of Neurology and Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
- University of Pennsylvania Perelman School of Medicine, Philadelphia
| | | | - Sumit Parikh
- Neurogenetics, Cleveland Clinic, Cleveland, Ohio
| | | | - Stephen Fulton
- Pediatric Neurology, University of Tennessee Health Science Center, Memphis
- Le Bonheur Comprehensive Epilepsy Program & Neuroscience Institute, Le Bonheur Children’s Hospital, Memphis, Tennessee
| | - Yoshimi Sogawa
- UPMC Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | | | | | | | | | - Carey A. Wilson
- Division of Pediatric Neurology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City
| | - Guillermo G. Guzmán
- Servicio Neuropsiquiatria Infantil, Hospital San Borja Arriarán, Santiago, Chile
| | | | | |
Collapse
|
9
|
Iqbal MZ, Jia T, Tang T, Anwar M, Ali A, Hassan MJ, Zhang Y, Tang Q, Peng Y. A Heat Shock Transcription Factor TrHSFB2a of White Clover Negatively Regulates Drought, Heat and Salt Stress Tolerance in Transgenic Arabidopsis. Int J Mol Sci 2022; 23:12769. [PMID: 36361560 PMCID: PMC9654841 DOI: 10.3390/ijms232112769] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/19/2022] [Accepted: 10/10/2022] [Indexed: 11/15/2023] Open
Abstract
Heat shock transcription factors (HSF) are divided into classes A, B and C. Class A transcription factors are generally recognized as transcriptional activators, while functional characterization of class B and C heat shock transcription factors have not been fully developed in most plant species. We isolated and characterized a novel HSF transcription factor gene, TrHSFB2a (a class B HSF) gene, from the drought stress-sensitive forage crop species, white clover (Trifolium repens). TrHSFB2a was highly homologous to MtHSFB2b, CarHSFB2a, AtHSFB2b and AtHSFB2a. The expression of TrHSFB2a was strongly induced by drought (PEG6000 15% w/v), high temperature (35 °C) and salt stresses (200 mM L-1 NaCl) in white clover, while subcellular localization analysis showed that it is a nuclear protein. Overexpression of the white clover gene TrHSFB2a in Arabidopsis significantly reduced fresh and dry weight, relative water contents (RWC), maximum photosynthesis efficiency (Fv/Fm) and performance index on the absorption basis (PIABS), while it promoted leaf senescence, relative electrical conductivity (REC) and the contents of malondialdehyde (MDA) compared to a wild type under drought, heat and salt stress conditions of Arabidopsis plants. The silencing of its native homolog (AtHSFB2a) by RNA interference in Arabidopsis thaliana showed opposite trends by significantly increasing fresh and dry weights, RWC, maximum photosynthesis efficiency (Fv/Fm) and performance index on the absorption basis (PIABS) and reducing REC and MDA contents under drought, heat and salt stress conditions compared to wild type Arabidopsis plants. These phenotypic and physiological indicators suggested that the TrHSFB2a of white clover functions as a negative regulator of heat, salt and drought tolerance. The bioinformatics analysis showed that TrHSFB2a contained the core B3 repression domain (BRD) that has been reported as a repressor activator domain in other plant species that might repress the activation of the heat shock-inducible genes required in the stress tolerance process in plants. The present study explores one of the potential causes of drought and heat sensitivity in white clover that can be overcome to some extent by silencing the TrHSFB2a gene in white clover.
Collapse
Affiliation(s)
- Muhammad Zafar Iqbal
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Tong Jia
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Tao Tang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Muhammad Anwar
- Guangdong Key Laboratory of Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China
| | - Asif Ali
- Key Laboratory of Southwest Crop Genetic Resources and Genetic Improvement, Ministry of Education, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Muhammad Jawad Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Youzhi Zhang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Qilin Tang
- Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Yan Peng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| |
Collapse
|
10
|
Hassan MJ, Qi H, Cheng B, Hussain S, Peng Y, Liu W, Feng G, Zhao J, Li Z. Enhanced Adaptability to Limited Water Supply Regulated by Diethyl Aminoethyl Hexanoate (DA-6) Associated With Lipidomic Reprogramming in Two White Clover Genotypes. Front Plant Sci 2022; 13:879331. [PMID: 35668812 PMCID: PMC9163823 DOI: 10.3389/fpls.2022.879331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 04/19/2022] [Indexed: 06/04/2023]
Abstract
Membrane lipid reprogramming is one of the most important adaptive strategies in plant species under unfavorable environmental circumstances. Therefore, the present experiment was conducted to elucidate the effect of diethyl aminoethyl hexanoate (DA-6), a novel synthetic plant growth regulator, on oxidative damage, photosynthetic performance, changes in lipidomic profile, and unsaturation index of lipids in two white clover (Trifolium repens) cultivars (drought-sensitive "Ladino" and drought-resistant "Riverdel") under PEG-6000-induced water-deficit stress. Results revealed that water-deficit stress significantly enhanced oxidative damage and decreased photosynthetic functions in both cultivars. However, the damage was less in Riverdel. In addition, water-deficit stress significantly decreased the relative content of monogalactocyl-diacylglycerols (MGDG), sulfoquinovosyl-diacylglycerols (SQDG), phosphatidic acisd (PA), phosphatidyl-ethanolamines (PE), phosphatidyl-glycerols (PG), phosphatidyl-serines (PS), ceramides (Cer), hexosylmonoceramides (Hex1Cer), sphingomyelins (SM), and sphingosines (Sph) in both cultivars, but a more pronounced decline was observed in Ladino. Exogenous application of DA-6 significantly increased the relative content of digalactocyl-diacylglycerols (DGDG), monogalactocyl-diacylglycerolsabstra (MGDG), sulfoquinovosyl-diacylglycerols (SQDG), phosphatidic acids (PA), phosphatidyl-ethanolamines (PE), phosphatidyl-glycerols (PG), phosphatidyl-inositols (PI), phosphatidyl-serines (PS), ceramides (Cer), hexosylmonoceramides (Hex1Cer), neutral glycosphingolipids (CerG2GNAc1), and sphingosines (Sph) in the two cultivars under water-deficit stress. DA-6-treated Riverdel exhibited a significantly higher DGDG:MGDG ratio and relative content of sphingomyelins (SM) than untreated plants in response to water deficiency. Furthermore, the DA-6-pretreated plants increased the unsaturation index of phosphatidic acids (PA) and phosphatidylinositols (PI) in Ladino, ceramides (Cer) and hexosylmonoceramides (Hex1Cer) in Riverdel, and sulfoquinovosyl-diacylglycerols (SQDG) in both cultivars under water stress. These results suggested that DA-6 regulated drought resistance in white clover could be associated with increased lipid content and reprogramming, higher DGDG:MGDG ratio, and improved unsaturation index of lipids, contributing to enhanced membrane stability, integrity, fluidity, and downstream signaling transduction.
Collapse
Affiliation(s)
- Muhammad Jawad Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Hongyin Qi
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Bizhen Cheng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Shafiq Hussain
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Yan Peng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Wei Liu
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Guangyan Feng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Junming Zhao
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Zhou Li
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| |
Collapse
|
11
|
Cheng B, Hassan MJ, Feng G, Zhao J, Liu W, Peng Y, Li Z. Metabolites Reprogramming and Na +/K + Transportation Associated With Putrescine-Regulated White Clover Seed Germination and Seedling Tolerance to Salt Toxicity. Front Plant Sci 2022; 13:856007. [PMID: 35392519 PMCID: PMC8981242 DOI: 10.3389/fpls.2022.856007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
Soil salinization is a serious challenge to many countries worldwide. Putrescine (Put) is related to the improvement of seed germination under salt stress, but molecular and metabolic mechanisms are still not fully understood. The objectives of this study were to determine the effect of seed soaking with Put on germination characteristics under salt stress induced by 100 mm sodium chloride (NaCl) and to further analyze subsequent stress tolerance associated with amylolysis, oxidative damage, sodium (Na+)/ potassium (K+) accumulation and transportation, and metabolic homeostasis in white clover (Trifolium repens cv. Haifa) seedlings. The results showed that seed soaking with Put significantly alleviated salt-induced decreases in the endogenous Put content, germination rate, germination vigor, germination index, Rl/SL, and fresh/dry weight of seedlings. Put application also significantly promoted starch metabolism through activating α-amylase and β-amylase activities under salt stress. The metabolomic analysis showed that seed soaking with Put significantly increased the accumulation of polyamines (Put and spermidine), amino acids (γ-aminobutyric acid, glutamate, alanine, proline, citrulline, etc.), organic acids (ketopentanic acid, malonic acid, malic acid, ketopentanic acid, cis-sinapinic acid, etc.), lipids and fatty acids (glycerol, stearic acid, linoleic acid, palmitic acid, etc.), sugars (levoglucosan, fucose, and anhydro-D-galactose), alcohols (myo-inositol, allo-inositol, hexadecanol, and threitol), and other metabolites (thymine, xanthine, adenine, guanine, and glycerol 1-phosphate, etc.) associated with enhanced tricarboxylic acid (TCA) cycle and γ-aminobutyric acid (GABA) shunt contributing to better osmotic adjustment, cell membrane stability, energy supply, and metabolic homeostasis when seeds germinated under salt stress. In addition, Put significantly up-regulated the AsSOS1, NHX6, SKOR, HKT1, and HKT8 expression levels which played critical roles in Na+ rejection and K+ retention resulting in higher K+/Na+ ratio during seed germination under salt stress. The Put-induced up-regulation of HAL2 transcription level could reduce the toxicity of 3'-phosphoadenosine-5'-phosphosulfate (PAPS) in cells. Current findings will provide an integrative understanding of Put-induced salt tolerance associated with amylolysis, metabolic regulation, and ionic homeostasis during seed germination.
Collapse
Affiliation(s)
| | | | | | | | | | - Yan Peng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Zhou Li
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| |
Collapse
|
12
|
Zhou M, Hassan MJ, Peng Y, Liu L, Liu W, Zhang Y, Li Z. γ-Aminobutyric Acid (GABA) Priming Improves Seed Germination and Seedling Stress Tolerance Associated With Enhanced Antioxidant Metabolism, DREB Expression, and Dehydrin Accumulation in White Clover Under Water Stress. Front Plant Sci 2021; 12:776939. [PMID: 34925419 PMCID: PMC8678086 DOI: 10.3389/fpls.2021.776939] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 10/28/2021] [Indexed: 06/14/2023]
Abstract
As an important plant growth regulator, the role of γ-aminobutyric acid (GABA) in regulating seeds germination was less well elucidated under water stress. The present study was conducted to investigate the impact of GABA pretreatment on seeds germination of white clover (Trifolium repens) under water deficient condition. Results demonstrated that seeds pretreated with 2μmol/l GABA significantly alleviated decreases in endogenous GABA content, germination percentage, germination potential, germination index, root length, and fresh weight along with marked reduction in mean germination time after 7days of germination under drought stress. In addition, seeds priming with GABA significantly increased the accumulation of soluble sugars, non-enzymatic antioxidants [reduced ascorbate, dehydroascorbic acid, oxidized glutathione (GSSG), and reduced glutathione (GSH)], and enzymes [superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX), dehydroascorbate reductase (DHAR), glutathioe reductase, and monodehydroasorbate reductase (MDHR)] activities involved in antioxidant metabolism, which could be associated with significant reduction in osmotic potential and the accumulation of superoxide anion, hydrogen peroxide, electrical leakage, and malondialdehyde in seeds under drought stress. The GABA-pretreated seeds exhibited significantly higher abundance of dehydrin (DHN, 56 KDa) and expression levels of DHNs encoding genes (SK2, Y2K, Y2SK, and Dehydrin b) and transcription factors (DREB2, DREB3, DREB4, and DREB5) than the untreated seeds during germination under water-limited condition. These results indicated that the GABA regulated improvement in seeds germination associated with enhancement in osmotic adjustment, antioxidant metabolism, and DREB-related DHNs expression. Current study will provide a better insight about the GABA-regulated defense mechanism during seeds germination under water-limited condition.
Collapse
|
13
|
Khan I, Awan SA, Rizwan M, Ali S, Hassan MJ, Brestic M, Zhang X, Huang L. Effects of silicon on heavy metal uptake at the soil-plant interphase: A review. Ecotoxicol Environ Saf 2021; 222:112510. [PMID: 34273846 DOI: 10.1016/j.ecoenv.2021.112510] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 05/28/2023]
Abstract
Silicon (Si) is the second richest element in the soil and surface of earth crust with a variety of positive roles in soils and plants. Different soil factors influence the Si bioavailability in soil-plant system. The Si involves in the mitigation of various biotic (insect pests and pathogenic diseases) and abiotic stresses (salt, drought, heat, and heavy metals etc.) in plants by improving plant tolerance mechanism at various levels. However, Si-mediated restrictions in heavy metals uptake and translocation from soil to plants and within plants require deep understandings. Recently, Si-based improvements in plant defense system, cell damage repair, cell homeostasis, and regulation of metabolism under heavy metal stress are getting more attention. However, limited knowledge is available on the molecular mechanisms by which Si can reduce the toxicity of heavy metals, their uptake and transfer from soil to plant roots. Thus, this review is focused the following facets in greater detail to provide better understandings about the role of Si at molecular level; (i) how Si improves tolerance in plants to variable environmental conditions, (ii) how biological factors affect Si pools in the soil (iii) how soil properties impact the release and capability of Si to decrease the bioavailability of heavy metals in soil and their accumulation in plant roots; (iv) how Si influences the plant root system with respect to heavy metals uptake or sequestration, root Fe/Mn plaque, root cell wall and compartment; (v) how Si makes complexes with heavy metals and restricts their translocation/transfer in root cell and influences the plant hormonal regulation; (vi) the competition of uptake between Si and heavy metals such as arsenic, aluminum, and cadmium due to similar membrane transporters, and (vii) how Si-mediated regulation of gene expression involves in the uptake, transportation and accumulation of heavy metals by plants and their possible detoxification mechanisms. Furthermore, future research work with respect to mitigation of heavy metal toxicity in plants is also discussed.
Collapse
Affiliation(s)
- Imran Khan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Samrah Afzal Awan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Muhammad Rizwan
- Department of Environmental Sciences and Engineering, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Shafaqat Ali
- Department of Environmental Sciences and Engineering, Government College University Faisalabad, Faisalabad 38000, Pakistan; Department of Biological Sciences and Technology, China Medical University, Taichung 40402, Taiwan
| | - Muhammad Jawad Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Marian Brestic
- Department of Plant Physiology, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture, Trieda A. Hlinku 2, 949 76 Nitra, Slovakia
| | - Xinquan Zhang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Linkai Huang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.
| |
Collapse
|
14
|
Huang C, Tian Y, Zhang B, Hassan MJ, Li Z, Zhu Y. Chitosan (CTS) Alleviates Heat-Induced Leaf Senescence in Creeping Bentgrass by Regulating Chlorophyll Metabolism, Antioxidant Defense, and the Heat Shock Pathway. Molecules 2021; 26:5337. [PMID: 34500767 PMCID: PMC8434246 DOI: 10.3390/molecules26175337] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 08/28/2021] [Accepted: 08/29/2021] [Indexed: 11/16/2022] Open
Abstract
Chitosan (CTS) is a deacetylated derivative of chitin that is involved in adaptive response to abiotic stresses. However, the regulatory role of CTS in heat tolerance is still not fully understood in plants, especially in grass species. The aim of this study was to investigate whether the CTS could reduce heat-induced senescence and damage to creeping bentgrass associated with alterations in antioxidant defense, chlorophyll (Chl) metabolism, and the heat shock pathway. Plants were pretreated exogenously with or without CTS (0.1 g L-1) before being exposed to normal (23/18 °C) or high-temperature (38/33 °C) conditions for 15 days. Heat stress induced detrimental effects, including declines in leaf relative water content and photochemical efficiency, but significantly increased reactive oxygen species (ROS) accumulation, membrane lipid peroxidation, and Chl loss in leaves. The exogenous application of CTS significantly alleviated heat-induced damage in creeping bentgrass leaves by ameliorating water balance, ROS scavenging, the maintenance of Chl metabolism, and photosynthesis. Compared to untreated plants under heat stress, CTS-treated creeping bentgrass exhibited a significantly higher transcription level of genes involved in Chl biosynthesis (AsPBGD and AsCHLH), as well as a lower expression level of Chl degradation-related gene (AsPPH) and senescence-associated genes (AsSAG12, AsSAG39, Asl20, and Ash36), thus reducing leaf senescence and enhancing photosynthetic performance under heat stress. In addition, the foliar application of CTS significantly improved antioxidant enzyme activities (SOD, CAT, POD, and APX), thereby effectively reducing heat-induced oxidative damage. Furthermore, heat tolerance regulated by the CTS in creeping bentgrass was also associated with the heat shock pathway, since AsHSFA-6a and AsHSP82 were significantly up-regulated by the CTS during heat stress. The potential mechanisms of CTS-regulated thermotolerance associated with other metabolic pathways still need to be further studied in grass species.
Collapse
Affiliation(s)
- Cheng Huang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (C.H.); (Y.T.); (B.Z.); (M.J.H.)
| | - Yulong Tian
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (C.H.); (Y.T.); (B.Z.); (M.J.H.)
| | - Bingbing Zhang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (C.H.); (Y.T.); (B.Z.); (M.J.H.)
| | - Muhammad Jawad Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (C.H.); (Y.T.); (B.Z.); (M.J.H.)
| | - Zhou Li
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (C.H.); (Y.T.); (B.Z.); (M.J.H.)
| | - Yongqun Zhu
- Soil and Fertilizer Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China
| |
Collapse
|
15
|
Kaygusuz E, Khayyat AIA, Abdullah U, Budde BS, Asif M, Ahmed I, Makhdoom EUH, Sur-Erdem I, Baig JM, Khan MMA, Toliat MR, Becker C, Anwar H, Iqbal M, Fischer S, Jameel M, Sher M, Tariq M, Malik NA, Noegel AA, Hassan MJ, Thiele H, Tinschert S, Eichinger L, Höning S, Baig SM, Nürnberg P, Hussain MS. A 24-generation-old founder mutation impairs splicing of RBBP8 in Pakistani families affected with Jawad syndrome. Clin Genet 2021; 100:486-488. [PMID: 34270086 DOI: 10.1111/cge.14028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/05/2021] [Accepted: 07/07/2021] [Indexed: 11/27/2022]
Abstract
Jawad syndrome is a multiple congenital anomaly and intellectual disability syndrome with mutation in RBBP8 reported only in two families. Here, we report on two new families from Pakistan and identified a previously reported variant in RBBP8, NM_002894.3:c.1808-1809delTA. We could show that this mutation impairs splicing resulting in two different abnormal transcripts. Finally, we could verify a shared haplotype among all four families and estimate the founder event to have occurred some 24 generations ago.
Collapse
Affiliation(s)
- Emrah Kaygusuz
- Cologne Center for Genomics (CCG) and Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.,Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany.,Molecular Biology and Genetics, Bilecik Şeyh Edebali University, Bilecik, Turkey
| | - Arwa Ishaq A Khayyat
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany.,Biochemistry Department, King Saud University, Riyadh, Saudi Arabia
| | - Uzma Abdullah
- University Institute of Biochemistry and Biotechnology, PMAS-Arid Agriculture University, Rawalpindi, Pakistan
| | - Birgit Susanne Budde
- Cologne Center for Genomics (CCG) and Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Maria Asif
- Cologne Center for Genomics (CCG) and Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.,Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany
| | - Ilyas Ahmed
- Institute for Cardiogenetics, University of Luebeck, Luebeck, Germany
| | - Ehtisham Ul Haq Makhdoom
- Cologne Center for Genomics (CCG) and Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.,Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany.,Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad, Pakistan.,Department of Physiology, Government College University, Faisalabad, Pakistan
| | - Ilknur Sur-Erdem
- Department of Molecular Biology, Koc University School of Medicine, Istanbul, Turkey
| | - Jamshaid Mahmood Baig
- Department of Bioinformatics and Biotechnology, International Islamic University, Islamabad, Pakistan
| | - Muhammad Mohsin Ali Khan
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad, Pakistan
| | - Mohammad Reza Toliat
- Cologne Center for Genomics (CCG) and Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Christian Becker
- Cologne Center for Genomics (CCG) and Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Haseeb Anwar
- Department of Physiology, Government College University, Faisalabad, Pakistan
| | - Maria Iqbal
- Cologne Center for Genomics (CCG) and Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.,Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany.,Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad, Pakistan
| | - Sarah Fischer
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany
| | - Muhammad Jameel
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad, Pakistan
| | - Muhammad Sher
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad, Pakistan
| | - Muhammad Tariq
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad, Pakistan
| | - Naveed Altaf Malik
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad, Pakistan
| | - Angelika A Noegel
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany
| | - Muhammad Jawad Hassan
- Department of Biological Sciences, National University of Medical Sciences, Rawalpindi, Pakistan
| | - Holger Thiele
- Cologne Center for Genomics (CCG) and Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Sigrid Tinschert
- Zentrum Medizinische Genetik, Medizinische Universität, Innsbruck, Austria
| | - Ludwig Eichinger
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany
| | - Stefan Höning
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany
| | - Shahid Mahmood Baig
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE) College, PIEAS, Faisalabad, Pakistan
| | - Peter Nürnberg
- Cologne Center for Genomics (CCG) and Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Muhammad Sajid Hussain
- Cologne Center for Genomics (CCG) and Center for Molecular Medicine Cologne (CMMC), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.,Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany
| |
Collapse
|
16
|
Hassan MJ, Geng W, Zeng W, Raza MA, Khan I, Iqbal MZ, Peng Y, Zhu Y, Li Z. Diethyl Aminoethyl Hexanoate Priming Ameliorates Seed Germination via Involvement in Hormonal Changes, Osmotic Adjustment, and Dehydrins Accumulation in White Clover Under Drought Stress. Front Plant Sci 2021; 12:709187. [PMID: 34394164 PMCID: PMC8358406 DOI: 10.3389/fpls.2021.709187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 07/05/2021] [Indexed: 05/03/2023]
Abstract
Drought is a serious outcome of climate change reducing the productivity of forage species under arid and semi-arid conditions worldwide. Diethyl aminoethyl hexanoate (DA-6), a novel plant growth regulator, has proven to be involved in the amelioration of critical physiological functions in many agricultural crops under various abiotic stresses, but the role of the DA-6 in improving seed germination has never been investigated under drought stress. The present study was carried out to elucidate the impact of the DA-6 priming on seeds germination of white clover under drought stress. Results showed that seed priming with the DA-6 significantly mitigated the drought-induced reduction in germination percentage, germination vigor, germination index, seed vigor index, root length, shoot length, and fresh weight after 7 days of seed germination. The DA-6 significantly increased the endogenous indole-3-acetic acid, gibberellin, and cytokinin content with marked reduction in abscisic acid content in seedlings under drought stress. In addition, the DA-6 significantly accelerated starch catabolism by enhancing the activities of hydrolases contributing toward enhanced soluble sugars, proline content and ameliorated the antioxidant defense system to enhance the ability of reactive oxygen species scavenging under drought stress. Furthermore, exogenous DA-6 application significantly increased dehydrins accumulation and upregulated transcript levels of genes encoding dehydrins (SK2, Y2SK, or DHNb) during seeds germination under water deficient condition. These findings suggested that the DA-6 mediated seeds germination and drought tolerance associated with changes in endogenous phytohormones resulting in increased starch degradation, osmotic adjustment, antioxidants activity, and dehydrins accumulation during seed germination under water deficient condition.
Collapse
Affiliation(s)
- Muhammad Jawad Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Wan Geng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Weihang Zeng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Muhammad Ali Raza
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Imran Khan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Muhammad Zafar Iqbal
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Yan Peng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Yongqun Zhu
- Soil and Fertilizer Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
- *Correspondence: Yongqun Zhu,
| | - Zhou Li
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
- Zhou Li,
| |
Collapse
|
17
|
Li Z, Tang M, Hassan MJ, Zhang Y, Han L, Peng Y. Adaptability to High Temperature and Stay-Green Genotypes Associated With Variations in Antioxidant, Chlorophyll Metabolism, and γ-Aminobutyric Acid Accumulation in Creeping Bentgrass Species. Front Plant Sci 2021; 12:750728. [PMID: 34777429 PMCID: PMC8581182 DOI: 10.3389/fpls.2021.750728] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 09/27/2021] [Indexed: 05/20/2023]
Abstract
High temperature limits the cultivation and utilization of cool-season plants in many regions worldwide. Recently, extreme hot waves swept across the globe in summer, leading to enormous economic loss. The evaluation and identification of genotypic variation in thermotolerance within species are critical to breeding for environmental adaptation and also provide potential materials to explore thermo-resistant mechanism in plants. Forty-two accessions of creeping bentgrass (Agrostis stolonifera), which is a cool-season perennial grass for turf and ecological remediation, were collected from 15 different countries. Physiological traits, namely, chlorophyll (Chl) content, electrolyte leakage, photochemical efficiency, performance index on absorption basis, leaf relative water content, and osmotic potential were used to evaluate the heat tolerance of these materials in controlled growth chambers and field during summer. Stay-green and early-aging genotypes were selected to further reveal the potential mechanism of tolerance to senescence and heat damage associated with alterations in Chl metabolism, antioxidant and photosynthetic capacity, and endogenous γ-aminobutyric acid (GABA). Findings showed that there were significant genetic variations in physiological traits among 41 materials in response to high temperature stress. The 13M, PROVIDENCE, and LOFTS L-93 were the top three accessions with superior tolerance to heat and summer stress than other materials in terms of laboratory and field tests. In response to heat stress, the stay-green genotype PROVIDENCE exhibited significantly higher photochemical efficiency, net photosynthetic rate, transpiration rate, and water use efficiency than the heat-susceptible W6 6570. Delayed leaf senescence in relation to less Chl loss was detected in the PROVIDENCE associated with maintenance of significantly higher expression levels of Chl-anabolic genes (AsCHLH, AsPBGD, and AsPOR) and lower Chl-catabolic gene AsPPH under heat stress. Genetic attributes, such as better capacity to scavenge reactive oxygen species and higher endogenous GABA content could play positive roles in alleviating heat-induced senescence, oxidative damage, and metabolic disturbance in the PROVIDENCE.
Collapse
Affiliation(s)
- Zhou Li
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
- Institute of Turfgrass Science, Beijing Forestry University, Beijing, China
- *Correspondence: Zhou Li
| | - Mingyan Tang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Muhammad Jawad Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Yan Zhang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Liebao Han
- Institute of Turfgrass Science, Beijing Forestry University, Beijing, China
| | - Yan Peng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
- Yan Peng
| |
Collapse
|
18
|
Geng W, Li Z, Hassan MJ, Peng Y. Chitosan regulates metabolic balance, polyamine accumulation, and Na + transport contributing to salt tolerance in creeping bentgrass. BMC Plant Biol 2020; 20:506. [PMID: 33148164 PMCID: PMC7640404 DOI: 10.1186/s12870-020-02720-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 10/26/2020] [Indexed: 05/04/2023]
Abstract
BACKGROUND Chitosan (CTS), a natural polysaccharide, exhibits multiple functions of stress adaptation regulation in plants. However, effects and mechanism of CTS on alleviating salt stress damage are still not fully understood. Objectives of this study were to investigate the function of CTS on improving salt tolerance associated with metabolic balance, polyamine (PAs) accumulation, and Na+ transport in creeping bentgrass (Agrostis stolonifera). RESULTS CTS pretreatment significantly alleviated declines in relative water content, photosynthesis, photochemical efficiency, and water use efficiency in leaves under salt stress. Exogenous CTS increased endogenous PAs accumulation, antioxidant enzyme (SOD, POD, and CAT) activities, and sucrose accumulation and metabolism through the activation of sucrose synthase and pyruvate kinase activities, and inhibition of invertase activity. The CTS also improved total amino acids, glutamic acid, and γ-aminobutyric acid (GABA) accumulation. In addition, CTS-pretreated plants exhibited significantly higher Na+ content in roots and lower Na+ accumulation in leaves then untreated plants in response to salt stress. However, CTS had no significant effects on K+/Na+ ratio. Importantly, CTS enhanced salt overly sensitive (SOS) pathways and also up-regulated the expression of AsHKT1 and genes (AsNHX4, AsNHX5, and AsNHX6) encoding Na+/H+ exchangers under salt stress. CONCLUSIONS The application of CTS increased antioxidant enzyme activities, thereby reducing oxidative damage to roots and leaves. CTS-induced increases in sucrose and GABA accumulation and metabolism played important roles in osmotic adjustment and energy metabolism during salt stress. The CTS also enhanced SOS pathway associated with Na+ excretion from cytosol into rhizosphere, increased AsHKT1 expression inhibiting Na+ transport to the photosynthetic tissues, and also up-regulated the expression of AsNHX4, AsNHX5, and AsNHX6 promoting the capacity of Na+ compartmentalization in roots and leaves under salt stress. In addition, CTS-induced PAs accumulation could be an important regulatory mechanism contributing to enhanced salt tolerance. These findings reveal new functions of CTS on regulating Na+ transport, enhancing sugars and amino acids metabolism for osmotic adjustment and energy supply, and increasing PAs accumulation when creeping bentgrass responds to salt stress.
Collapse
Affiliation(s)
- Wan Geng
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Zhou Li
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Muhammad Jawad Hassan
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yan Peng
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| |
Collapse
|
19
|
Khan I, Raza MA, Awan SA, Shah GA, Rizwan M, Ali B, Tariq R, Hassan MJ, Alyemeni MN, Brestic M, Zhang X, Ali S, Huang L. Amelioration of salt induced toxicity in pearl millet by seed priming with silver nanoparticles (AgNPs): The oxidative damage, antioxidant enzymes and ions uptake are major determinants of salt tolerant capacity. Plant Physiol Biochem 2020; 156:221-232. [PMID: 32979796 DOI: 10.1016/j.plaphy.2020.09.018] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 09/14/2020] [Indexed: 05/20/2023]
Abstract
Abiotic stresses in plants reduce crop growth and productivity. Nanoparticles (NPs) are effectively involved in the physiochemical processes of crop plants, especially under the abiotic stresses; whereas, less information is available regarding the role of AgNPs in salt-stressed plants. Therefore, in the current study, we investigated the effects of seed priming with commercially available silver nanoparticles (AgNPs) (size range between 50 and 100 nm) on plant morphology, physiology, and antioxidant defence system of pearl millet (Pennisetum glaucum L.) under different concentrations of salt stress (0, 120 and 150 mM NaCl). The seed priming with AgNPs at different levels (0, 10, 20 and 30 mM) mitigated the adverse impacts of salt stress and improved plant growth and defence system. The results demonstrated that salt-stressed plants had restricted growth and a noticeable decline in fresh and dry weight. Salt stress enhanced the oxidative damage by excessive production of hydrogen peroxide (H2O2), malondialdehyde (MDA) contents in pearl millet leaves. However, seed priming with AgNPs significantly improved the plant height growth related attributes, relative water content, proline contents and ultimately fresh and dry weight at 20 mM AgNPs alone or with salt stress. The AgNPs reduced the oxidative damage by improving antioxidant enzyme activities in the pearl millet leaves under salt stress. Furthermore, sodium (Na+) and Na+/K+ ratio was decreased and potassium (K+) increased by NPs, and the interactive effects between salt and AgNPs significantly impacted the total phenolic and flavonoid content in pearl millet. It was concluded that seed priming with AgNPs could enhance salinity tolerance in crop plants by enhancing physiological and biochemical responses. This might boost global crop production in salt-degraded lands.
Collapse
Affiliation(s)
- Imran Khan
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu, 611130, China
| | - Muhammad Ali Raza
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, PR China
| | - Samrah Afzal Awan
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ghulam Abbas Shah
- Department of Agronomy, PMAS Arid Agriculture University, Rawalpindi, 46000, Pakistan
| | - Muhammad Rizwan
- Department of Environmental Sciences and Engineering, Government College University, Faisalabad, 38000, Pakistan
| | - Basharat Ali
- Department of Agronomy, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Rezwan Tariq
- Institute of Crop Science, Chinese Academy of Agriculture Sciences (CAAS), Beijing, 100081, China
| | - Muhammad Jawad Hassan
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu, 611130, China
| | - Mohammed Nasser Alyemeni
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh, l1451, Saudi Arabia
| | - Marian Brestic
- Department of Plant Physiology, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture, Trieda A. Hlinku 2, 949 76, Nitra, Slovakia
| | - Xinquan Zhang
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu, 611130, China
| | - Shafaqat Ali
- Department of Environmental Sciences and Engineering, Government College University, Faisalabad, 38000, Pakistan; Department of Biological Sciences and Technology, China Medical University, Taichung, 40402, Taiwan.
| | - Linkai Huang
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu, 611130, China.
| |
Collapse
|
20
|
Li Z, Hou J, Zhang Y, Zeng W, Cheng B, Hassan MJ, Zhang Y, Pu Q, Peng Y. Spermine Regulates Water Balance Associated with Ca2+-Dependent Aquaporin (TrTIP2-1, TrTIP2-2 and TrPIP2-7) Expression in Plants under Water Stress. Plant Cell Physiol 2020; 61:1576-1589. [PMID: 32544243 DOI: 10.1093/pcp/pcaa080] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 06/09/2020] [Indexed: 05/20/2023]
Abstract
Spermine (Spm) regulates water balance involved in water channel proteins, aquaporins (AQPs), in plants. An increase in endogenous Spm content via exogenous Spm application significantly improved cell membrane stability, photosynthesis, osmotic adjustment (OA) and water use efficiency (WUE) contributing to enhanced tolerance to water stress in white clover. Spm upregulated TrTIP2-1, TrTIP2-2 and TrPIP2-7 expressions and also increased the abundance of TIP2 and PIP2-7 proteins in white clover under water stress. Spm quickly activated intracellular Ca2+ signaling and Spm-induced TrTIP2-2 and TrPIP2-7 expressions could be blocked by Ca2+ channel blockers and the inhibitor of Ca2+-dependent protein kinase in leaves of white clover. TrSAMS in relation to Spm biosynthesis was first cloned from white clover and the TrSAMS was located in the nucleus. Transgenic Arabidopsis overexpressing the TrSAMS had significantly higher endogenous Spm content and improved cell membrane stability, photosynthesis, OA, WUE and transcript levels of AtSIP1-1, AtSIP1-2, AtTIP2-1, AtTIP2-2, AtPIP1-2, AtPIP2-1 and AtNIP2-1 than wild type in response to water stress. Current findings indicate that Spm regulates water balance via an enhancement in OA, WUE and water transport related to Ca2+-dependent AQP expression in plants under water stress.
Collapse
Affiliation(s)
- Zhou Li
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Jieru Hou
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Yan Zhang
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Weihang Zeng
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Bizhen Cheng
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Muhammad Jawad Hassan
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Youzhi Zhang
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Qi Pu
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Yan Peng
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| |
Collapse
|
21
|
Zhang Y, Li Y, Hassan MJ, Li Z, Peng Y. Indole-3-acetic acid improves drought tolerance of white clover via activating auxin, abscisic acid and jasmonic acid related genes and inhibiting senescence genes. BMC Plant Biol 2020; 20:150. [PMID: 32268884 PMCID: PMC7140375 DOI: 10.1186/s12870-020-02354-y] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 03/23/2020] [Indexed: 05/04/2023]
Abstract
BACKGROUND Auxin may have a positive effect on plants under drought stress. White clover is widely cultivated and often prone to water shortages. In the present study, we investigated the effects of exogenous indole - 3-acetic acid (IAA) on growth and physiological changes of white clover under drought stress condition. The contents of endogenous IAA and other hormones including ABA, CTK, JA, GA, IAA, and SA were assayed. Moreover, expressions of auxin-responsive genes, drought-responsive genes and leaf senescence-associated genes were detected in response to exogenous IAA. RESULTS Compared to control, drought stress alone significantly diminished stem dry weigh, relative water content (RWC) and total chlorophyll content (Chl). Exogenous IAA treatment significantly increased RWC and Chl, whereas L-AOPP treatment drastically decreased stem dry weight, RWC and Chl under drought stress condition. Additionally, exogenous IAA treatment significantly increased ABA content and JA content, up-regulated expression of auxin responsive genes (GH3.1, GH3.9, IAA8), drought stress responsive genes (bZIP11, DREB2, MYB14, MYB48, WRKY2, WRKY56, WRKY108715 and RD22), and down-regulated expressions of auxin-responding genes (GH3.3, GH3.6, IAA27) and leaf senescence genes (SAG101 and SAG102) in the presence of PEG. Contrarily, L-AOPP treatment significantly reduced contents of ABA, GA3 and JA, down-regulated expressions of GH3.1, GH3.9, IAA8, bZIP11, DREB2, MYB14, MYB48, WRKY2, WRKY56, WRKY108715, ERD and RD22, and up-regulated SAG101 and SAG102. CONCLUSIONS Exogenous IAA improved drought tolerance of white clover possibly due to endogenous plant hormone concentration changes and modulation of genes involving in drought stress response and leaf senescence. These results provided useful information to understand mechanisms of IAA improved drought tolerance in white clover.
Collapse
Affiliation(s)
- Youzhi Zhang
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
- College of Life science, Changchun Normal University, Changchun, 130032, China
| | - Yaping Li
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Muhammad Jawad Hassan
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Zhou Li
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yan Peng
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
| |
Collapse
|
22
|
Jawad Hassan M, Ali Raza M, Khan I, Ahmad Meraj T, Ahmed M, Abbas Shah G, Ansar M, Afzal Awan S, Khan N, Iqbal N, Peng Y, Li Z. Selenium and Salt Interactions in Black Gram ( Vigna mungo L): Ion Uptake, Antioxidant Defense System, and Photochemistry Efficiency. Plants (Basel) 2020; 9:E467. [PMID: 32272796 PMCID: PMC7238270 DOI: 10.3390/plants9040467] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/04/2020] [Accepted: 04/05/2020] [Indexed: 01/10/2023]
Abstract
Salinity is a major abiotic stress which limits crop production, especially under rainfed conditions. Selenium (Se), as an important micronutrient, plays a vital role in mitigating detrimental effects of different abiotic stresses. The objective of this research was to examine the effect of Se fertilization on black gram (Vigna mungo) under salt stress. Our results showed that salt stress (100 mM NaCl) in leaves significantly induced oxidative damage and caused a decline in relative water content, chlorophyll (Chl), stomatal conductance (gs), photochemical efficiency (Fv/Fm), sucrose, and reducing sugars. A low dose of Se (1.5 ppm) significantly reduced hydrogen peroxide content, malondialdehyde formation, cell membrane damage, and also improved antioxidative enzyme activities, including superoxide dismutase, catalase, ascorbate peroxidase, glutathione reductase, and glutathione peroxidase under salt stress. Se-treated plants exhibited higher Chl, gs, Fv/Fm, sucrose, and reducing sugars than untreated plants in response to salt stress. In addition, Se application enhanced Se uptake and reduced Na+ uptake, but Cl- remained unaffected. Our results indicated that a low dose of Se effectively alleviated salt damage via inhibition of Na+ uptake and enhanced antioxidant defense resulting in a significant decrease in oxidative damage, and maintained gaseous exchange and PS II function for sucrose and reducing sugars accumulation in black gram.
Collapse
Affiliation(s)
- Muhammad Jawad Hassan
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu 611130, China; (M.J.H.); (I.K.); (S.A.A.); (Y.P.)
| | - Muhammad Ali Raza
- College of Agronomy, Sichuan Agricultural University, Chengdu 611130, PR China; (M.A.R.); (T.A.M.)
| | - Imran Khan
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu 611130, China; (M.J.H.); (I.K.); (S.A.A.); (Y.P.)
| | - Tehseen Ahmad Meraj
- College of Agronomy, Sichuan Agricultural University, Chengdu 611130, PR China; (M.A.R.); (T.A.M.)
| | - Mukhtar Ahmed
- Department of Agronomy, PMAS-Arid Agriculture University, Rawalpindi 46000, Pakistan; (M.A.); (G.A.S.); (M.A.)
- Department of Agricultural Research for Northern Sweden, Swedish University of Agricultural Sciences, Umeå 90183, Sweden
| | - Ghulam Abbas Shah
- Department of Agronomy, PMAS-Arid Agriculture University, Rawalpindi 46000, Pakistan; (M.A.); (G.A.S.); (M.A.)
| | - Muhammad Ansar
- Department of Agronomy, PMAS-Arid Agriculture University, Rawalpindi 46000, Pakistan; (M.A.); (G.A.S.); (M.A.)
| | - Samrah Afzal Awan
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu 611130, China; (M.J.H.); (I.K.); (S.A.A.); (Y.P.)
| | - Nanak Khan
- Department of Agronomy, Balochistan Agriculture College, Quetta 87100, Pakistan;
| | - Nasir Iqbal
- School of Agriculture, Food & Wine, The University of Adelaide, PMB1, Glen Osmond, Adelaide 5064, Australia;
| | - Yan Peng
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu 611130, China; (M.J.H.); (I.K.); (S.A.A.); (Y.P.)
| | - Zhou Li
- Department of Grassland Science, Animal Science and Technology College, Sichuan Agricultural University, Chengdu 611130, China; (M.J.H.); (I.K.); (S.A.A.); (Y.P.)
| |
Collapse
|
23
|
Raza MA, Feng LY, Werf W, Iqbal N, Khan I, Khan A, Din AMU, Naeem M, Meraj TA, Hassan MJ, Khan A, Lu FZ, Liu X, Ahmed M, Yang F, Yang W. Optimum strip width increases dry matter, nutrient accumulation, and seed yield of intercrops under the relay intercropping system. Food Energy Secur 2020. [DOI: 10.1002/fes3.199] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
| | - Ling Yang Feng
- College of Agronomy Sichuan Agricultural University Chengdu China
| | - Wopke Werf
- Centre for Crop Systems Analysis Wageningen University Wageningen The Netherlands
| | - Nasir Iqbal
- College of Agronomy Sichuan Agricultural University Chengdu China
| | - Imran Khan
- Department of Grassland Science Sichuan Agricultural University Chengdu China
| | - Ahsin Khan
- College of Life Sciences Sichuan Agricultural University Yaan China
| | - Atta Mohi Ud Din
- College of Life Sciences Sichuan Agricultural University Yaan China
| | - Muhammd Naeem
- College of Agronomy Sichuan Agricultural University Chengdu China
| | | | | | - Aaqil Khan
- College of Agronomy Sichuan Agricultural University Chengdu China
| | - Feng Zhi Lu
- College of Agronomy Sichuan Agricultural University Chengdu China
| | - Xin Liu
- College of Agronomy Shandong Agricultural University Taian China
| | - Mukhtar Ahmed
- Department of Agronomy Pir Mehr Ali Shah Arid Agriculture University Rawalpindi Pakistan
| | - Feng Yang
- College of Agronomy Sichuan Agricultural University Chengdu China
| | - Wenyu Yang
- College of Agronomy Sichuan Agricultural University Chengdu China
| |
Collapse
|
24
|
Khan S, Lin S, Harlalka GV, Ullah A, Shah K, Khalid S, Mehmood S, Hassan MJ, Ahmad W, Self JE, Crosby AH, Baple EL, Gul A. BBS5 and INPP5E mutations associated with ciliopathy disorders in families from Pakistan. Ann Hum Genet 2019; 83:477-482. [PMID: 31173343 DOI: 10.1111/ahg.12336] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Revised: 04/17/2019] [Accepted: 05/18/2019] [Indexed: 11/28/2022]
Abstract
Ciliopathies are a clinically and genetically heterogeneous group of disorders often exhibiting phenotypic overlap and caused by abnormalities in the structure or function of cellular cilia. As such, a precise molecular diagnosis is important for guiding clinical management and genetic counseling. In the present study, two Pakistani families comprising individuals with overlapping clinical features suggestive of a ciliopathy syndrome, including intellectual disability, obesity, congenital retinal dystrophy, and hypogonadism (in males), were investigated clinically and genetically. Whole-exome sequencing identified the likely causes of disease as a novel homozygous frameshift mutation (NM_152384.2: c.196delA; p.(Arg66Glufs*12); family 1) in BBS5, and a nonsense mutation (NM_019892.5:c.1879C>T; p.Gln627*; family 2) in INPP5E, previously reported in an extended Pakistani family with MORM syndrome. Our findings expand the molecular spectrum associated with BBS5 mutations in Pakistan and provide further supportive evidence that the INPP5E mutation is a common cause of ciliopathy in Northern Pakistan, likely representing a regional founder mutation. This study also highlights the value of genomic studies in Pakistan for families affected by rare heterogeneous developmental disorders and where clinical phenotyping may be limited by geographical and financial constraints. The identification of the spectrum and frequency of disease-causing variants within this setting enables the development of population-specific genetic testing strategies targeting variants common to the local population and improving health care outcomes.
Collapse
Affiliation(s)
- Shazia Khan
- Department of Biological Sciences, International Islamic University Islamabad, Islamabad, Pakistan.,RILD Wellcome Wolfson Centre, Royal Devon and Exeter Hospital, Exeter, UK
| | - Siying Lin
- RILD Wellcome Wolfson Centre, Royal Devon and Exeter Hospital, Exeter, UK
| | - Gaurav V Harlalka
- RILD Wellcome Wolfson Centre, Royal Devon and Exeter Hospital, Exeter, UK
| | - Asmat Ullah
- Department of Biochemistry, Quaid-i-Azam University, Islamabad, Pakistan.,Department of Molecualr Biology, Shaheed Zulfiqar Ali Bhutto Medical University, PIMS, Islamabad, Pakistan
| | - Khadim Shah
- Department of Biotechnology, COMSATS University Islamabad, Abbotabad Campus, Pakistan
| | - Sumbul Khalid
- Department of Biological Sciences, International Islamic University Islamabad, Islamabad, Pakistan
| | - Sarmad Mehmood
- Atta ur Rahman School of Applied Biosciences, National University of Sciences & Technology, Islamabad, Pakistan
| | - Muhammad Jawad Hassan
- Atta ur Rahman School of Applied Biosciences, National University of Sciences & Technology, Islamabad, Pakistan
| | - Wasim Ahmad
- Department of Biochemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Jay E Self
- Clinical and Experimental Sciences, University of Southampton, Southampton, UK
| | - Andrew H Crosby
- RILD Wellcome Wolfson Centre, Royal Devon and Exeter Hospital, Exeter, UK
| | - Emma L Baple
- RILD Wellcome Wolfson Centre, Royal Devon and Exeter Hospital, Exeter, UK.,Peninsula Clinical Genetics Service, Royal Devon & Exeter Hospital, Exeter, UK
| | - Asma Gul
- Department of Biological Sciences, International Islamic University Islamabad, Islamabad, Pakistan
| |
Collapse
|
25
|
Raza MA, Feng LY, Werf W, Cai GR, Khalid MHB, Iqbal N, Hassan MJ, Meraj TA, Naeem M, Khan I, Rehman SU, Ansar M, Ahmed M, Yang F, Yang W. Narrow‐wide‐row planting pattern increases the radiation use efficiency and seed yield of intercrop species in relay‐intercropping system. Food Energy Secur 2019. [DOI: 10.1002/fes3.170] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Muhammad Ali Raza
- College of Agronomy Sichuan Agricultural University Chengdu China
- China Key Laboratory of Crop Eco‐physiology and Farming System in Southwest Ministry of Agriculture Chengdu China
| | - Ling Yang Feng
- College of Agronomy Sichuan Agricultural University Chengdu China
- China Key Laboratory of Crop Eco‐physiology and Farming System in Southwest Ministry of Agriculture Chengdu China
| | - Wopke Werf
- Centre for Crop Systems Analysis Wageningen University Wageningen The Netherlands
| | - Gao Ren Cai
- College of Agronomy Sichuan Agricultural University Chengdu China
- China Key Laboratory of Crop Eco‐physiology and Farming System in Southwest Ministry of Agriculture Chengdu China
| | - Muhammad Hayder Bin Khalid
- College of Agronomy Sichuan Agricultural University Chengdu China
- Maize Research Institute Sichuan Agricultural University Chengdu China
| | - Nasir Iqbal
- College of Agronomy Sichuan Agricultural University Chengdu China
- China Key Laboratory of Crop Eco‐physiology and Farming System in Southwest Ministry of Agriculture Chengdu China
| | | | | | - Muhammd Naeem
- College of Agronomy Sichuan Agricultural University Chengdu China
- China Key Laboratory of Crop Eco‐physiology and Farming System in Southwest Ministry of Agriculture Chengdu China
| | - Imran Khan
- Department of Grassland Science Sichuan Agricultural University Chengdu China
| | - Sana ur Rehman
- Department of Agronomy Pir Mehr Ali Shah Arid Agriculture University Rawalpindi Pakistan
| | - Muhammad Ansar
- Department of Agronomy Pir Mehr Ali Shah Arid Agriculture University Rawalpindi Pakistan
| | - Mukhtar Ahmed
- Department of Agronomy Pir Mehr Ali Shah Arid Agriculture University Rawalpindi Pakistan
- Department of Northern Agricultural Sciences Swedish University of Agricultural Sciences Umeå Sweden
| | - Feng Yang
- College of Agronomy Sichuan Agricultural University Chengdu China
- China Key Laboratory of Crop Eco‐physiology and Farming System in Southwest Ministry of Agriculture Chengdu China
| | - Wenyu Yang
- College of Agronomy Sichuan Agricultural University Chengdu China
- China Key Laboratory of Crop Eco‐physiology and Farming System in Southwest Ministry of Agriculture Chengdu China
| |
Collapse
|
26
|
Raza MA, Bin Khalid MH, Zhang X, Feng LY, Khan I, Hassan MJ, Ahmed M, Ansar M, Chen YK, Fan YF, Yang F, Yang W. Effect of planting patterns on yield, nutrient accumulation and distribution in maize and soybean under relay intercropping systems. Sci Rep 2019; 9:4947. [PMID: 30894625 PMCID: PMC6426961 DOI: 10.1038/s41598-019-41364-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 01/22/2019] [Indexed: 11/18/2022] Open
Abstract
Planting patterns affect nitrogen (N), phosphorus (P), and potassium (K) acquisition and distribution in maize and soybean under intercropping conditions. Here we reveal that strip relay-intercropping increases the N, P, and K uptake and distribution across plant organs (root, straw, and seed) of maize and soybean, accelerates the dry-matter production of intercrop-species, and compensates the slight maize yield loss by considerably increasing the soybean yield. In a two-year experiment, soybean was planted with maize in different planting patterns (SI, 50:50 cm and SII, 40:160 cm) of relay-intercropping, both planting patterns were compared with sole cropping of maize (SM) and soybean (SS). As compared to SI, SII increased the N, P, and K accumulation in each organ of soybean by 20, 32, and 18 (root) %, 71, 61, and 76 (straw) %, and 68, 65, and 62 (seed) %, respectively, whereas decreased the N, P, and K accumulation in each organ of maize by 1, 4, and 8 (root) %, 1, 10, and 3 (straw) %, and 5, 10, and 8 (seed) %, respectively. Overall, in SII, relay-cropped soybean accumulated 91% of total nutrient uptake (TNU) of sole soybean plants, and relay-cropped maize accumulated 94% of TNU of sole maize plants.
Collapse
Affiliation(s)
- Muhammad Ali Raza
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- China Key Laboratory of Crop Eco-physiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, 611130, P.R. China
| | - Muhammad Hayder Bin Khalid
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Maize Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, PR China
| | - Xia Zhang
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- China Key Laboratory of Crop Eco-physiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, 611130, P.R. China
| | - Ling Yang Feng
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- China Key Laboratory of Crop Eco-physiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, 611130, P.R. China
| | - Imran Khan
- Department of Grassland Science, Sichuan Agricultural University, Chengdu, 611130, PR China
| | - Muhammad Jawad Hassan
- Department of Grassland Science, Sichuan Agricultural University, Chengdu, 611130, PR China
| | - Mukhtar Ahmed
- Department of Agronomy, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, Punjab, Pakistan
| | - Muhammad Ansar
- Department of Agronomy, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, Punjab, Pakistan
| | - Yuan Kai Chen
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- China Key Laboratory of Crop Eco-physiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, 611130, P.R. China
| | - Yuan Fang Fan
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- China Key Laboratory of Crop Eco-physiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, 611130, P.R. China
| | - Feng Yang
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
- China Key Laboratory of Crop Eco-physiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, 611130, P.R. China.
| | - Wenyu Yang
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
- China Key Laboratory of Crop Eco-physiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, 611130, P.R. China.
| |
Collapse
|
27
|
Arshad MW, Harlalka GV, Lin S, D'Atri I, Mehmood S, Shakil M, Hassan MJ, Chioza BA, Self JE, Ennis S, O'Gorman L, Norman C, Aman T, Ali SS, Kaul H, Baple EL, Crosby AH, Ullah MI, Shabbir MI. Mutations in TYR and OCA2 associated with oculocutaneous albinism in Pakistani families. Meta Gene 2018. [DOI: 10.1016/j.mgene.2018.03.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
|
28
|
Santos-Cortez RLP, Khan V, Khan FS, Mughal ZUN, Chakchouk I, Lee K, Rasheed M, Hamza R, Acharya A, Ullah E, Saqib MAN, Abbe I, Ali G, Hassan MJ, Khan S, Azeem Z, Ullah I, Bamshad MJ, Nickerson DA, Schrauwen I, Ahmad W, Ansar M, Leal SM. Novel candidate genes and variants underlying autosomal recessive neurodevelopmental disorders with intellectual disability. Hum Genet 2018; 137:735-752. [PMID: 30167849 PMCID: PMC6201268 DOI: 10.1007/s00439-018-1928-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 08/10/2018] [Indexed: 01/30/2023]
Abstract
Identification of Mendelian genes for neurodevelopmental disorders using exome sequencing to study autosomal recessive (AR) consanguineous pedigrees has been highly successful. To identify causal variants for syndromic and non-syndromic intellectual disability (ID), exome sequencing was performed using DNA samples from 22 consanguineous Pakistani families with ARID, of which 21 have additional phenotypes including microcephaly. To aid in variant identification, homozygosity mapping and linkage analysis were performed. DNA samples from affected family member(s) from every pedigree underwent exome sequencing. Identified rare damaging exome variants were tested for co-segregation with ID using Sanger sequencing. For seven ARID families, variants were identified in genes not previously associated with ID, including: EI24, FXR1 and TET3 for which knockout mouse models have brain defects; and CACNG7 and TRAPPC10 where cell studies suggest roles in important neural pathways. For two families, the novel ARID genes CARNMT1 and GARNL3 lie within previously reported ID microdeletion regions. We also observed homozygous variants in two ID candidate genes, GRAMD1B and TBRG1, for which each has been previously reported in a single family. An additional 14 families have homozygous variants in established ID genes, of which 11 variants are novel. All ARID genes have increased expression in specific structures of the developing and adult human brain and 91% of the genes are differentially expressed in utero or during early childhood. The identification of novel ARID candidate genes and variants adds to the knowledge base that is required to further understand human brain function and development.
Collapse
Affiliation(s)
- Regie Lyn P Santos-Cortez
- Department of Molecular and Human Genetics, Center for Statistical Genetics, Baylor College of Medicine, 1 Baylor Plaza 700D, Houston, TX, 77030, USA
- Department of Otolaryngology, University of Colorado School of Medicine, 12700 E. 19th Ave., Aurora, CO, 80045, USA
| | - Valeed Khan
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Falak Sher Khan
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Zaib-Un-Nisa Mughal
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Imen Chakchouk
- Department of Molecular and Human Genetics, Center for Statistical Genetics, Baylor College of Medicine, 1 Baylor Plaza 700D, Houston, TX, 77030, USA
| | - Kwanghyuk Lee
- Department of Molecular and Human Genetics, Center for Statistical Genetics, Baylor College of Medicine, 1 Baylor Plaza 700D, Houston, TX, 77030, USA
| | - Memoona Rasheed
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Rifat Hamza
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Anushree Acharya
- Department of Molecular and Human Genetics, Center for Statistical Genetics, Baylor College of Medicine, 1 Baylor Plaza 700D, Houston, TX, 77030, USA
| | - Ehsan Ullah
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Muhammad Arif Nadeem Saqib
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
- Pakistan Health Research Council, Shahrah-e-Jamhuriat, G-5/2, Islamabad, Pakistan
| | - Izoduwa Abbe
- Department of Molecular and Human Genetics, Center for Statistical Genetics, Baylor College of Medicine, 1 Baylor Plaza 700D, Houston, TX, 77030, USA
| | - Ghazanfar Ali
- Department of Biotechnology, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - Muhammad Jawad Hassan
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Saadullah Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, KPK, Pakistan
| | - Zahid Azeem
- Department of Biochemistry, Azad Jammu and Kashmir Medical College, Muzaffarabad, Pakistan
| | - Irfan Ullah
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Michael J Bamshad
- Department of Genome Sciences, University of Washington, Foege Building S-250, 3720 15th Ave. NE, Seattle, WA, 98195, USA
- Department of Pediatrics, University of Washington, 1959 NE Pacific St., Seattle, WA, 98195, USA
| | - Deborah A Nickerson
- Department of Genome Sciences, University of Washington, Foege Building S-250, 3720 15th Ave. NE, Seattle, WA, 98195, USA
| | - Isabelle Schrauwen
- Department of Molecular and Human Genetics, Center for Statistical Genetics, Baylor College of Medicine, 1 Baylor Plaza 700D, Houston, TX, 77030, USA
| | - Wasim Ahmad
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Muhammad Ansar
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Suzanne M Leal
- Department of Molecular and Human Genetics, Center for Statistical Genetics, Baylor College of Medicine, 1 Baylor Plaza 700D, Houston, TX, 77030, USA.
| |
Collapse
|
29
|
Safia R, Jairajpuri ZS, Khetrapal S, Hassan MJ, Gupta M, Jetley S. An analysis of NESTROFT and Red cell indices in evaluating antenatal mothers for Beta Thalassemia trait. Bangladesh J Med Sci 2018. [DOI: 10.3329/bjms.v17i3.36996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background: The frequency of thalassemia trait is about 3% worldwide, while in developing countries like India, it is a major cause of burden on the health care system. Naked eye single tube red cell osmotic fragility test (NESTROFT) used in population screening for beta thalassemia trait. It is a simple, low cost, reliable and most suitable screening test for β BTT, with a sensitivity of 99.8% in regions with high prevalence rates.Material &Methods: The present study was conducted in the Department of Pathology and included a total of 174 antenatal cases, attending the Out Patient Department of Obstetrics and Gynecology of a tertiary health care center in New Delhi between June 2011 to January 2012. The aim of the study was to screen mothers antenatally for early detection of BTT and to test the validity of NESTROFT in detection of thalassemic carriers of this area.Results: 174 pregnant women attending antenatal clinics were screened for detecting hemoglobinopathy with the help of NESTROFT, red cell indices, haemoglobin electrophoresis and HPLC It was seen that only four cases were BTT while ten were of microcytic anaemia and two had normal red cell indices.Conclusion: antenatal diagnosis of BTT is an important screening programme to reduce the burden of birth of children suffering from thalassemia and other hemoglobinopathies.Bangladesh Journal of Medical Science Vol.17(3) 2018 p.411-416
Collapse
|
30
|
Walker S, Dad R, Thiruvahindrapuram B, Ullah MI, Ahmad A, Hassan MJ, Scherer SW, Minassian BA. Chorea-acanthocytosis: Homozygous 1-kb deletion in VPS13A detected by whole-genome sequencing. Neurol Genet 2018; 4:e242. [PMID: 29845114 PMCID: PMC5961193 DOI: 10.1212/nxg.0000000000000242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 04/05/2018] [Indexed: 11/15/2022]
Abstract
Objective To determine a molecular diagnosis for a large multigenerational family of South Asian ancestry with seizures, hyperactivity, and episodes of tongue biting. Methods Two affected individuals from the family were analyzed by whole-genome sequencing on the Illumina HiSeq X platform, and rare variants were prioritized for interpretation with respect to the phenotype. Results A previously undescribed, 1-kb homozygous deletion was identified in both individuals sequenced, which spanned 2 exons of the VPS13A gene, and was found to segregate in other family members. Conclusions VPS13A is associated with autosomal recessive chorea-acanthocytosis, a diagnosis consistent with the phenotype observed in this family. Whole-genome sequencing presents a comprehensive and agnostic approach for detecting diagnostic mutations in families with rare neurologic disorders.
Collapse
Affiliation(s)
- Susan Walker
- Centre for Applied Genomics (S.W., B.T., S.W.S.), The Hospital for Sick Children; Program in Genetics and Genome Biology (S.W., R.D., B.T., S.W.S., B.A.M.), The Hospital for Sick Children, Toronto, Ontario, Canada; Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad; Department of Biochemistry (I.M.U.), University of Health Sciences, Lahore; Division of Neurology (A.A.), Shifa International Hospital, Shifa Tameer e Millat University, Islamabad, Pakistan; Department of Molecular Genetics (S.W.S.), University of Toronto; McLaughlin Centre (S.W.S.), University of Toronto, Canada; and Department of Pediatrics (B.A.M.), University of Texas Southwestern, Dallas
| | - Rubina Dad
- Centre for Applied Genomics (S.W., B.T., S.W.S.), The Hospital for Sick Children; Program in Genetics and Genome Biology (S.W., R.D., B.T., S.W.S., B.A.M.), The Hospital for Sick Children, Toronto, Ontario, Canada; Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad; Department of Biochemistry (I.M.U.), University of Health Sciences, Lahore; Division of Neurology (A.A.), Shifa International Hospital, Shifa Tameer e Millat University, Islamabad, Pakistan; Department of Molecular Genetics (S.W.S.), University of Toronto; McLaughlin Centre (S.W.S.), University of Toronto, Canada; and Department of Pediatrics (B.A.M.), University of Texas Southwestern, Dallas
| | - Bhooma Thiruvahindrapuram
- Centre for Applied Genomics (S.W., B.T., S.W.S.), The Hospital for Sick Children; Program in Genetics and Genome Biology (S.W., R.D., B.T., S.W.S., B.A.M.), The Hospital for Sick Children, Toronto, Ontario, Canada; Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad; Department of Biochemistry (I.M.U.), University of Health Sciences, Lahore; Division of Neurology (A.A.), Shifa International Hospital, Shifa Tameer e Millat University, Islamabad, Pakistan; Department of Molecular Genetics (S.W.S.), University of Toronto; McLaughlin Centre (S.W.S.), University of Toronto, Canada; and Department of Pediatrics (B.A.M.), University of Texas Southwestern, Dallas
| | - Muhammed Ikram Ullah
- Centre for Applied Genomics (S.W., B.T., S.W.S.), The Hospital for Sick Children; Program in Genetics and Genome Biology (S.W., R.D., B.T., S.W.S., B.A.M.), The Hospital for Sick Children, Toronto, Ontario, Canada; Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad; Department of Biochemistry (I.M.U.), University of Health Sciences, Lahore; Division of Neurology (A.A.), Shifa International Hospital, Shifa Tameer e Millat University, Islamabad, Pakistan; Department of Molecular Genetics (S.W.S.), University of Toronto; McLaughlin Centre (S.W.S.), University of Toronto, Canada; and Department of Pediatrics (B.A.M.), University of Texas Southwestern, Dallas
| | - Arsalan Ahmad
- Centre for Applied Genomics (S.W., B.T., S.W.S.), The Hospital for Sick Children; Program in Genetics and Genome Biology (S.W., R.D., B.T., S.W.S., B.A.M.), The Hospital for Sick Children, Toronto, Ontario, Canada; Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad; Department of Biochemistry (I.M.U.), University of Health Sciences, Lahore; Division of Neurology (A.A.), Shifa International Hospital, Shifa Tameer e Millat University, Islamabad, Pakistan; Department of Molecular Genetics (S.W.S.), University of Toronto; McLaughlin Centre (S.W.S.), University of Toronto, Canada; and Department of Pediatrics (B.A.M.), University of Texas Southwestern, Dallas
| | - Muhammad Jawad Hassan
- Centre for Applied Genomics (S.W., B.T., S.W.S.), The Hospital for Sick Children; Program in Genetics and Genome Biology (S.W., R.D., B.T., S.W.S., B.A.M.), The Hospital for Sick Children, Toronto, Ontario, Canada; Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad; Department of Biochemistry (I.M.U.), University of Health Sciences, Lahore; Division of Neurology (A.A.), Shifa International Hospital, Shifa Tameer e Millat University, Islamabad, Pakistan; Department of Molecular Genetics (S.W.S.), University of Toronto; McLaughlin Centre (S.W.S.), University of Toronto, Canada; and Department of Pediatrics (B.A.M.), University of Texas Southwestern, Dallas
| | - Stephen W Scherer
- Centre for Applied Genomics (S.W., B.T., S.W.S.), The Hospital for Sick Children; Program in Genetics and Genome Biology (S.W., R.D., B.T., S.W.S., B.A.M.), The Hospital for Sick Children, Toronto, Ontario, Canada; Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad; Department of Biochemistry (I.M.U.), University of Health Sciences, Lahore; Division of Neurology (A.A.), Shifa International Hospital, Shifa Tameer e Millat University, Islamabad, Pakistan; Department of Molecular Genetics (S.W.S.), University of Toronto; McLaughlin Centre (S.W.S.), University of Toronto, Canada; and Department of Pediatrics (B.A.M.), University of Texas Southwestern, Dallas
| | - Berge A Minassian
- Centre for Applied Genomics (S.W., B.T., S.W.S.), The Hospital for Sick Children; Program in Genetics and Genome Biology (S.W., R.D., B.T., S.W.S., B.A.M.), The Hospital for Sick Children, Toronto, Ontario, Canada; Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad; Department of Biochemistry (I.M.U.), University of Health Sciences, Lahore; Division of Neurology (A.A.), Shifa International Hospital, Shifa Tameer e Millat University, Islamabad, Pakistan; Department of Molecular Genetics (S.W.S.), University of Toronto; McLaughlin Centre (S.W.S.), University of Toronto, Canada; and Department of Pediatrics (B.A.M.), University of Texas Southwestern, Dallas
| |
Collapse
|
31
|
Ullah MI, Nasir A, Ahmad A, Harlalka GV, Ahmad W, Hassan MJ, Baple EL, Crosby AH, Chioza BA. Identification of novel L2HGDH mutation in a large consanguineous Pakistani family- a case report. BMC Med Genet 2018; 19:25. [PMID: 29458334 PMCID: PMC5819255 DOI: 10.1186/s12881-018-0532-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 01/24/2018] [Indexed: 11/27/2022]
Abstract
Background L-2-hydroxyglutaric aciduria (L2HGA) is a progressive neurometabolic disease of brain caused by mutations of in L-2-hydroxyglutarate dehydrogenase (L2HGDH) gene. Cardinal clinical features include cerebellar ataxia, epilepsy, neurodevelopmental delay, intellectual disability, and other clinical neurological deficits. Case presentation We describe an index case of the family presented with generalised tonic-clonic seizure, developmental delay, intellectual disability, and ataxia. Initially, the differential diagnosis was difficult to be established and a SNP genome wide scan identified the candidate region on chromosome 14q22.1. DNA sequencing showed a novel homozygous mutation in the candidate gene L2HGDH (NM_024884.2: c.178G > A; p.Gly60Arg). The mutation p.Gly60Arg lies in the highly conserved FAD/NAD(P)-binding domain of this mitochondrial enzyme, predicted to disturb enzymatic function. Conclusions The combination of homozygosity mapping and DNA sequencing identified a novel mutation in Pakistani family with variable clinical features. This is second report of a mutation in L2HGDH gene from Pakistan and the largest family with L2HGA reported to date.
Collapse
Affiliation(s)
- Muhammad Ikram Ullah
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.,RILD Wellcome Wolfson Centre - Level 4, Royal Devon and Exeter NHS Foundation Trust, University of Exeter Medical School, Barrack Road, Exeter, EX2 5DW, UK
| | - Abdul Nasir
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.,Computational Medicinal Chemistry Laboratory, Department of Biochemistry, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Arsalan Ahmad
- Division of Neurology, Shifa International Hospital, Shifa Tameer e Millat University, Islamabad, Pakistan
| | - Gaurav Vijay Harlalka
- RILD Wellcome Wolfson Centre - Level 4, Royal Devon and Exeter NHS Foundation Trust, University of Exeter Medical School, Barrack Road, Exeter, EX2 5DW, UK
| | - Wasim Ahmad
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Muhammad Jawad Hassan
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences & Technology (NUST), Islamabad, Pakistan
| | - Emma L Baple
- RILD Wellcome Wolfson Centre - Level 4, Royal Devon and Exeter NHS Foundation Trust, University of Exeter Medical School, Barrack Road, Exeter, EX2 5DW, UK
| | - Andrew H Crosby
- RILD Wellcome Wolfson Centre - Level 4, Royal Devon and Exeter NHS Foundation Trust, University of Exeter Medical School, Barrack Road, Exeter, EX2 5DW, UK
| | - Barry A Chioza
- RILD Wellcome Wolfson Centre - Level 4, Royal Devon and Exeter NHS Foundation Trust, University of Exeter Medical School, Barrack Road, Exeter, EX2 5DW, UK.
| |
Collapse
|
32
|
Sawal HA, Harripaul R, Mikhailov A, Vleuten K, Naeem F, Nasr T, Hassan MJ, Vincent JB, Ayub M, Rafiq MA. Three Mutations in the Bilateral Frontoparietal Polymicrogyria Gene GPR56 in Pakistani Intellectual Disability Families. J Pediatr Genet 2017; 7:60-66. [PMID: 29707406 DOI: 10.1055/s-0037-1612591] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 11/09/2017] [Indexed: 12/31/2022]
Abstract
Bilateral frontoparietal polymicrogyria (BFPP, MIM 606854) is a heterogeneous autosomal recessive disorder of abnormal cortical lamination, leading to moderate-to-severe intellectual disability (ID), seizure disorder, and motor difficulties, and caused by mutations in the G protein-coupled receptor 56 ( GPR56 ) gene. Twenty-eight mutations in 40 different families have been reported in the literature. The clinical and neuroimaging phenotype is consistent in these cases. The BFPP cortex consists of numerous small gyral cells, with scalloping of the cortical-white matter junction. There are also associated white matter, brain stem, and cerebellar changes. GPR56 is a member of an adhesion G protein-coupled receptor family with a very long N-terminal stalk and seven transmembrane domains. In this study, we identified three families from Pakistan, ascertained primarily for ID, with overlapping approximately 1 Mb region (chr16:56,973,335-57,942,866) of homozygosity by descent, including 24 RefSeq genes. We found three GPR56 homozygous mutations, using next-generation sequencing. These mutations include a substitutional variant, c.1460T > C; p.L487P, (chr16:57693480 T > C), a 13-bp insertion causing the frameshift and truncating mutation, p.Leu269Hisfs*21 (NM_005682.6:c.803_804insCCATGGAGGTGCT; Chr16: 57689345_57689346insCCATGGAGGTGCT), and a truncating mutation c.1426C > T; p.Arg476* (Chr16:57693446C > T). These mutations fully segregated with ID in these families and were absent in the Exome Aggregation Consortium database that has approximately 8,000 control samples of South Asian origin. Two of these mutations have been reported in ClinVar database, and the third one has not been reported before. Three families from Pakistan with GPR56 mutations have been reported before. With the addition of our findings, the total number of mutations reported in Pakistani patients now is six. These results increase our knowledge regarding the mutational spectrum of the GPR56 gene causing BFPP/ID.
Collapse
Affiliation(s)
- Humaira Aziz Sawal
- Molecular Neuropsychiatry & Development (MiND) Lab, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Ricardo Harripaul
- Molecular Neuropsychiatry & Development (MiND) Lab, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Anna Mikhailov
- Molecular Neuropsychiatry & Development (MiND) Lab, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Kayla Vleuten
- Molecular Neuropsychiatry & Development (MiND) Lab, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Farooq Naeem
- Lahore Institute of Research and Development, Lahore, Pakistan.,Department of Psychiatry, Queen's University, Kingston, Ontario, Canada
| | - Tanveer Nasr
- Department of Psychiatry, Mayo Hospital, Lahore, Pakistan.,Department of Psychiatry, Chaudhry Hospital, Gujranwala, Pakistan
| | - Muhammad Jawad Hassan
- Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - John B Vincent
- Molecular Neuropsychiatry & Development (MiND) Lab, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - Muhammad Ayub
- Lahore Institute of Research and Development, Lahore, Pakistan.,Department of Psychiatry, Queen's University, Kingston, Ontario, Canada
| | - Muhammad Arshad Rafiq
- Department of Biosciences, COMSATS Institute of Information Technology, Islamabad, Pakistan
| |
Collapse
|
33
|
Dad R, Walker S, Scherer SW, Hassan MJ, Kang SY, Minassian BA. Hyperventilation-athetosis in ASXL3 deficiency (Bainbridge-Ropers) syndrome. Neurol Genet 2017; 3:e189. [PMID: 28955728 PMCID: PMC5610043 DOI: 10.1212/nxg.0000000000000189] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 07/25/2017] [Indexed: 11/18/2022]
Affiliation(s)
- Rubina Dad
- Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad, Pakistan; Program in Genetics and Genome Biology (R.D.) and The Centre for Applied Genomics, Genetics and Genome Biology (S.W., S.W.S.), The Hospital for Sick Children, Department of Molecular Genetics (S.W.S.), and McLaughlin Centre (S.W.S.), University of Toronto, Ontario, Canada; Department of Neurolgy (S.Y.K.), Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Gyeonggi-do, Republic of Korea; Program in Genetics and Genome Biology (B.A.M.), Division of Neurology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Ontario, Canada; and Departments of Pediatrics, Neurology, and Neurotherapeutics (B.A.M.), University of Texas Southwestern, Dallas
| | - Susan Walker
- Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad, Pakistan; Program in Genetics and Genome Biology (R.D.) and The Centre for Applied Genomics, Genetics and Genome Biology (S.W., S.W.S.), The Hospital for Sick Children, Department of Molecular Genetics (S.W.S.), and McLaughlin Centre (S.W.S.), University of Toronto, Ontario, Canada; Department of Neurolgy (S.Y.K.), Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Gyeonggi-do, Republic of Korea; Program in Genetics and Genome Biology (B.A.M.), Division of Neurology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Ontario, Canada; and Departments of Pediatrics, Neurology, and Neurotherapeutics (B.A.M.), University of Texas Southwestern, Dallas
| | - Stephen W Scherer
- Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad, Pakistan; Program in Genetics and Genome Biology (R.D.) and The Centre for Applied Genomics, Genetics and Genome Biology (S.W., S.W.S.), The Hospital for Sick Children, Department of Molecular Genetics (S.W.S.), and McLaughlin Centre (S.W.S.), University of Toronto, Ontario, Canada; Department of Neurolgy (S.Y.K.), Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Gyeonggi-do, Republic of Korea; Program in Genetics and Genome Biology (B.A.M.), Division of Neurology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Ontario, Canada; and Departments of Pediatrics, Neurology, and Neurotherapeutics (B.A.M.), University of Texas Southwestern, Dallas
| | - Muhammad Jawad Hassan
- Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad, Pakistan; Program in Genetics and Genome Biology (R.D.) and The Centre for Applied Genomics, Genetics and Genome Biology (S.W., S.W.S.), The Hospital for Sick Children, Department of Molecular Genetics (S.W.S.), and McLaughlin Centre (S.W.S.), University of Toronto, Ontario, Canada; Department of Neurolgy (S.Y.K.), Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Gyeonggi-do, Republic of Korea; Program in Genetics and Genome Biology (B.A.M.), Division of Neurology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Ontario, Canada; and Departments of Pediatrics, Neurology, and Neurotherapeutics (B.A.M.), University of Texas Southwestern, Dallas
| | - Suk Yun Kang
- Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad, Pakistan; Program in Genetics and Genome Biology (R.D.) and The Centre for Applied Genomics, Genetics and Genome Biology (S.W., S.W.S.), The Hospital for Sick Children, Department of Molecular Genetics (S.W.S.), and McLaughlin Centre (S.W.S.), University of Toronto, Ontario, Canada; Department of Neurolgy (S.Y.K.), Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Gyeonggi-do, Republic of Korea; Program in Genetics and Genome Biology (B.A.M.), Division of Neurology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Ontario, Canada; and Departments of Pediatrics, Neurology, and Neurotherapeutics (B.A.M.), University of Texas Southwestern, Dallas
| | - Berge A Minassian
- Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Islamabad, Pakistan; Program in Genetics and Genome Biology (R.D.) and The Centre for Applied Genomics, Genetics and Genome Biology (S.W., S.W.S.), The Hospital for Sick Children, Department of Molecular Genetics (S.W.S.), and McLaughlin Centre (S.W.S.), University of Toronto, Ontario, Canada; Department of Neurolgy (S.Y.K.), Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Gyeonggi-do, Republic of Korea; Program in Genetics and Genome Biology (B.A.M.), Division of Neurology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Ontario, Canada; and Departments of Pediatrics, Neurology, and Neurotherapeutics (B.A.M.), University of Texas Southwestern, Dallas
| |
Collapse
|
34
|
Dad R, Walker S, Scherer SW, Hassan MJ, Alghamdi MD, Minassian BA, Alkhater RA. Febrile ataxia and myokymia broaden the SPG26 hereditary spastic paraplegia phenotype. Neurol Genet 2017. [PMID: 28626794 PMCID: PMC5458666 DOI: 10.1212/nxg.0000000000000156] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Rubina Dad
- Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Pakistan; Program in Genetics and Genome Biology (R.D., B.A.M.), Division of Neurology (B.A.M.), Department of Paediatrics, and The Centre for Applied Genomics, Genetics and Genome Biology (S.W., S.W.S.), The Hospital for Sick Children; Department of Molecular Genetics (S.W.S.), and McLaughlin Centre (S.W.S.), University of Toronto, Ontario, Canada; and Department of Pediatrics (M.D.A., R.A.A.), Division of Neurology, Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia
| | - Susan Walker
- Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Pakistan; Program in Genetics and Genome Biology (R.D., B.A.M.), Division of Neurology (B.A.M.), Department of Paediatrics, and The Centre for Applied Genomics, Genetics and Genome Biology (S.W., S.W.S.), The Hospital for Sick Children; Department of Molecular Genetics (S.W.S.), and McLaughlin Centre (S.W.S.), University of Toronto, Ontario, Canada; and Department of Pediatrics (M.D.A., R.A.A.), Division of Neurology, Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia
| | - Stephen W Scherer
- Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Pakistan; Program in Genetics and Genome Biology (R.D., B.A.M.), Division of Neurology (B.A.M.), Department of Paediatrics, and The Centre for Applied Genomics, Genetics and Genome Biology (S.W., S.W.S.), The Hospital for Sick Children; Department of Molecular Genetics (S.W.S.), and McLaughlin Centre (S.W.S.), University of Toronto, Ontario, Canada; and Department of Pediatrics (M.D.A., R.A.A.), Division of Neurology, Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia
| | - Muhammad Jawad Hassan
- Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Pakistan; Program in Genetics and Genome Biology (R.D., B.A.M.), Division of Neurology (B.A.M.), Department of Paediatrics, and The Centre for Applied Genomics, Genetics and Genome Biology (S.W., S.W.S.), The Hospital for Sick Children; Department of Molecular Genetics (S.W.S.), and McLaughlin Centre (S.W.S.), University of Toronto, Ontario, Canada; and Department of Pediatrics (M.D.A., R.A.A.), Division of Neurology, Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia
| | - Mohammad Domaia Alghamdi
- Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Pakistan; Program in Genetics and Genome Biology (R.D., B.A.M.), Division of Neurology (B.A.M.), Department of Paediatrics, and The Centre for Applied Genomics, Genetics and Genome Biology (S.W., S.W.S.), The Hospital for Sick Children; Department of Molecular Genetics (S.W.S.), and McLaughlin Centre (S.W.S.), University of Toronto, Ontario, Canada; and Department of Pediatrics (M.D.A., R.A.A.), Division of Neurology, Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia
| | - Berge A Minassian
- Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Pakistan; Program in Genetics and Genome Biology (R.D., B.A.M.), Division of Neurology (B.A.M.), Department of Paediatrics, and The Centre for Applied Genomics, Genetics and Genome Biology (S.W., S.W.S.), The Hospital for Sick Children; Department of Molecular Genetics (S.W.S.), and McLaughlin Centre (S.W.S.), University of Toronto, Ontario, Canada; and Department of Pediatrics (M.D.A., R.A.A.), Division of Neurology, Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia
| | - Reem A Alkhater
- Atta-ur Rahman School of Applied Biosciences (R.D., M.J.H.), National University of Sciences and Technology (NUST), Pakistan; Program in Genetics and Genome Biology (R.D., B.A.M.), Division of Neurology (B.A.M.), Department of Paediatrics, and The Centre for Applied Genomics, Genetics and Genome Biology (S.W., S.W.S.), The Hospital for Sick Children; Department of Molecular Genetics (S.W.S.), and McLaughlin Centre (S.W.S.), University of Toronto, Ontario, Canada; and Department of Pediatrics (M.D.A., R.A.A.), Division of Neurology, Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia
| |
Collapse
|
35
|
Abstract
Background: Adnexal skin tumors are a heterogeneous group of uncommon tumors usually misdiagnosed clinically due to a huge variety of types and their variants. Histopathology usually helps in establishing the diagnosis. Aims: The study was undertaken to analyze the morphological, clinical, and histological features of adnexal tumors (ATs) of the skin at our center over a period of 4 years. Subjects and Methods: retrospective study was conducted over a period of 4 years (April 2010–March 2014), comprising 25 ATs of skin diagnosed in the Department of Pathology, Hamdard Institute of Medical Sciences and Research, Jamia Hamdard, New Delhi. All the consecutively reported AT cases were reviewed and reclassified as AT arising from sebaceous glands, hair follicles, or sweat glands. The concordance of clinical and histopathological diagnosis was also assessed. Results: Most of the ATs were benign (24/25) with head and neck being the most common location (72%). Nearly 56% of the tumors exhibited sweat gland differentiation, 28% hair follicle differentiation, and sebaceous gland tumors accounted for 16%. The most common varieties of tumors encountered in the present study included hidradenoma papilliferum and pilomatricoma. The concordance between clinical and histopathological diagnosis was found to be 50% approximately. Conclusions: ATs of the skin are rare neoplasms with benign tumors being far more common. They are often misdiagnosed clinically, so histopathology remains the gold standard for establishing an accurate diagnosis of skin ATs.
Collapse
Affiliation(s)
- M Pujani
- Department of Pathology, ESIC Medical College, Faridabad, Haryana, India
| | - G B Madaan
- Department of Pathology, Dr. RML Hospital, New Delhi, India
| | - Z S Jairajpuri
- Department of Pathology, Hamdard Institute of Medical Sciences and Research, New Delhi, India
| | - S Jetley
- Department of Pathology, Hamdard Institute of Medical Sciences and Research, New Delhi, India
| | - M J Hassan
- Department of Pathology, Hamdard Institute of Medical Sciences and Research, New Delhi, India
| | - S Khan
- Department of Pathology, Hamdard Institute of Medical Sciences and Research, New Delhi, India
| |
Collapse
|
36
|
Ahmad A, Dad R, Ullah MI, Baig TA, Ahmad IN, Nasir A, Hübner CA, Hassan MJ. Corrigendum to "Clinical and genetic studies in patients with Lafora disease from Pakistan"[J. Neurol. Sci. 373 (2017) 263-267]. J Neurol Sci 2017; 375:281. [PMID: 28320149 DOI: 10.1016/j.jns.2017.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Arsalan Ahmad
- Division of Neurology, Shifa International Hospital, Shifa Tameer e Millat University, Islamabad, Pakistan
| | - Rubina Dad
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences & Technology (NUST), Islamabad, Pakistan
| | - Muhammad Ikram Ullah
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Tahir Ahmed Baig
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences & Technology (NUST), Islamabad, Pakistan
| | - Imran N Ahmad
- Division of Pathology, Shifa International Hospital, Shifa Tameer e Millat University, Islamabad, Pakistan
| | - Abdul Nasir
- Department of Biochemistry, Abdul Wali Khan University Mardan, Pakistan
| | - Christian A Hübner
- Institute of Human Genetics, University of Jena, Kollegiengasse 10, D-07743 Jena, Germany
| | - Muhammad Jawad Hassan
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences & Technology (NUST), Islamabad, Pakistan.
| |
Collapse
|
37
|
Afzal M, Amir M, Hassan MJ, Hussain MS, Aziz MN, Murad S, Murtaza I, Anees M, Sultan A. Erratum to: Clinical role of HER2 gene amplification and chromosome 17: a study on 154 IHC-equivocal cases of invasive breast carcinoma patients. Tumour Biol 2016; 37:15341. [DOI: 10.1007/s13277-016-5419-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
38
|
Santos-Cortez RLP, Faridi R, Rehman AU, Lee K, Ansar M, Wang X, Morell RJ, Isaacson R, Belyantseva IA, Dai H, Acharya A, Qaiser TA, Muhammad D, Ali RA, Shams S, Hassan MJ, Shahzad S, Raza SI, Bashir ZEH, Smith JD, Nickerson DA, Bamshad MJ, Riazuddin S, Ahmad W, Friedman TB, Leal SM. Autosomal-Recessive Hearing Impairment Due to Rare Missense Variants within S1PR2. Am J Hum Genet 2016; 98:331-8. [PMID: 26805784 DOI: 10.1016/j.ajhg.2015.12.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 12/07/2015] [Indexed: 11/17/2022] Open
Abstract
The sphingosine-1-phosphate receptors (S1PRs) are a well-studied class of transmembrane G protein-coupled sphingolipid receptors that mediate multiple cellular processes. However, S1PRs have not been previously reported to be involved in the genetic etiology of human traits. S1PR2 lies within the autosomal-recessive nonsyndromic hearing impairment (ARNSHI) locus DFNB68 on 19p13.2. From exome sequence data we identified two pathogenic S1PR2 variants, c.323G>C (p.Arg108Pro) and c.419A>G (p.Tyr140Cys). Each of these variants co-segregates with congenital profound hearing impairment in consanguineous Pakistani families with maximum LOD scores of 6.4 for family DEM4154 and 3.3 for family PKDF1400. Neither S1PR2 missense variant was reported among ∼120,000 chromosomes in the Exome Aggregation Consortium database, in 76 unrelated Pakistani exomes, or in 720 Pakistani control chromosomes. Both DNA variants affect highly conserved residues of S1PR2 and are predicted to be damaging by multiple bioinformatics tools. Molecular modeling predicts that these variants affect binding of sphingosine-1-phosphate (p.Arg108Pro) and G protein docking (p.Tyr140Cys). In the previously reported S1pr2(-/-) mice, stria vascularis abnormalities, organ of Corti degeneration, and profound hearing loss were observed. Additionally, hair cell defects were seen in both knockout mice and morphant zebrafish. Family PKDF1400 presents with ARNSHI, which is consistent with the lack of gross malformations in S1pr2(-/-) mice, whereas family DEM4154 has lower limb malformations in addition to hearing loss. Our findings suggest the possibility of developing therapies against hair cell damage (e.g., from ototoxic drugs) through targeted stimulation of S1PR2.
Collapse
Affiliation(s)
- Regie Lyn P Santos-Cortez
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Rabia Faridi
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA; Centre of Excellence in Molecular Biology, University of the Punjab, Lahore 54550, Pakistan
| | - Atteeq U Rehman
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA
| | - Kwanghyuk Lee
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Muhammad Ansar
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Xin Wang
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Robert J Morell
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA
| | - Rivka Isaacson
- Department of Chemistry, Faculty of Natural and Mathematical Sciences, King's College London, London WC2R 2LS, UK
| | - Inna A Belyantseva
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA
| | - Hang Dai
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Anushree Acharya
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Tanveer A Qaiser
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore 54550, Pakistan
| | - Dost Muhammad
- Chandka Medical College, Larkana, Sindh 77150, Pakistan
| | | | - Sulaiman Shams
- Department of Biochemistry, Abdul Wali Khan University, Mardan, 23200 Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Jawad Hassan
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Science & Technology (NUST), Islamabad 44000, Pakistan
| | - Shaheen Shahzad
- Department of Biotechnology and Bioinformatics, International Islamic University, Islamabad 44000, Pakistan
| | - Syed Irfan Raza
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Zil-E-Huma Bashir
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore 54550, Pakistan
| | - Joshua D Smith
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Deborah A Nickerson
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Michael J Bamshad
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Sheikh Riazuddin
- University of Lahore, Lahore 54550, Pakistan; Allama Iqbal Medical Research Centre, Jinnah Hospital Complex, Lahore 54550, Pakistan; Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad 44000, Pakistan
| | - Wasim Ahmad
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Thomas B Friedman
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA
| | - Suzanne M Leal
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA.
| |
Collapse
|
39
|
Ullah MI, Ahmad A, Raza SI, Amar A, Ali A, Bhatti A, John P, Mohyuddin A, Ahmad W, Hassan MJ. In silico analysis of SIGMAR1 variant (rs4879809) segregating in a consanguineous Pakistani family showing amyotrophic lateral sclerosis without frontotemporal lobar dementia. Neurogenetics 2015; 16:299-306. [PMID: 26205306 DOI: 10.1007/s10048-015-0453-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 07/02/2015] [Indexed: 02/07/2023]
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder affecting upper motor neurons in the brain and lower motor neurons in the brain stem and spinal cord, resulting in fatal paralysis. It has been found to be associated with frontotemporal lobar degeneration (FTLD). In the present study, we have described homozygosity mapping and gene sequencing in a consanguineous autosomal recessive Pakistani family showing non-juvenile ALS without signs of FTLD. Gene mapping was carried out in all recruited family members using microsatellite markers, and linkage was established with sigma non-opioid intracellular receptor 1 (SIGMAR1) gene at chromosome 9p13.2. Gene sequencing of SIGMAR1 revealed a novel 3'-UTR nucleotide variation c.672*31A>G (rs4879809) segregating with disease in this family. The C9ORF72 repeat region in intron 1, previously implicated in a related phenotype, was excluded through linkage, and further confirmation of exclusion was obtained by amplifying intron 1 of C9ORF72 with multiple primers in affected individuals and controls. In silico analysis was carried out to explore the possible role of 3'-UTR variant of SIGMAR1 in ALS. The Regulatory RNA motif and Element Finder program revealed disturbance in miRNA (hsa-miR-1205) binding site due to this variation. ESEFinder analysis showed new SRSF1 and SRSF1-IgM-BRCA1 binding sites with significant scores due to this variation. Our results indicate that the 3'-UTR SIGMAR1 variant c.672*31A>G may have a role in the pathogenesis of ALS in this family.
Collapse
Affiliation(s)
- Muhammad Ikram Ullah
- Department of Biochemistry, Faculty of Biological Sciences, Quaid i Azam University, Islamabad, 44000, Pakistan
- PCR and Research Laboratories, Shifa College of Medicine, Shifa Tameer e Millat University, Islamabad, 44000, Pakistan
| | - Arsalan Ahmad
- Division of Neurology, Shifa College of Medicine, Shifa International Hospital, Shifa Tameer e Millat University, Islamabad, 44000, Pakistan
| | - Syed Irfan Raza
- Department of Biochemistry, Faculty of Biological Sciences, Quaid i Azam University, Islamabad, 44000, Pakistan
| | - Ali Amar
- Department of Human Genetics and Molecular Biology, University of Health Sciences, Lahore, 54600, Pakistan
| | - Amjad Ali
- Atta ur Rahman School of Applied Biosciences (ASAB), National University of Sciences & Technology (NUST), Sector H-12, Islamabad, 44000, Pakistan
| | - Attya Bhatti
- Atta ur Rahman School of Applied Biosciences (ASAB), National University of Sciences & Technology (NUST), Sector H-12, Islamabad, 44000, Pakistan
| | - Peter John
- Atta ur Rahman School of Applied Biosciences (ASAB), National University of Sciences & Technology (NUST), Sector H-12, Islamabad, 44000, Pakistan
| | - Aisha Mohyuddin
- Section of Biochemistry, Shifa College of Medicine, Shifa Tameer e Millat University (STMU), Islamabad, 44000, Pakistan
| | - Wasim Ahmad
- Department of Biochemistry, Faculty of Biological Sciences, Quaid i Azam University, Islamabad, 44000, Pakistan
| | - Muhammad Jawad Hassan
- Atta ur Rahman School of Applied Biosciences (ASAB), National University of Sciences & Technology (NUST), Sector H-12, Islamabad, 44000, Pakistan.
| |
Collapse
|
40
|
Aisha NM, Haroon J, Hussain S, Tahir CM, Ikramullah M, Rahim H, Kishwar N, Younis S, Hassan MJ, Javed Q. Association between tumour necrosis-α gene polymorphisms and acne vulgaris in a Pakistani population. Clin Exp Dermatol 2015; 41:297-301. [PMID: 26373312 DOI: 10.1111/ced.12757] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/08/2015] [Indexed: 02/04/2023]
Abstract
BACKGROUND The cytokine tumour necrosis factor (TNF)-α is a well-studied potent candidate mediator that is systemically involved in a variety of inflammatory diseases. Several single nucleotide polymorphisms (SNPs) of the TNF-α gene have been studied with regard the pathogenesis of acne vulgaris, but the results have been inconclusive. AIM This case-control study investigated the association of the TNF -308 G>A and -238 G>A SNPs with acne vulgaris in a high-risk Pakistani population. METHODS In total, 160 healthy controls and 140 patients with acne were enrolled in this study. Polymorphisms were determined by PCR and restriction fragment length polymorphism analysis. RESULTS Our data showed that the TNF -308 G>A and TNF -238 G>A SNPs were present at a significantly higher rate in cases than in controls (P < 0.01 and P < 0.02; respectively). There was a significant difference between the G and A alleles from patients with acne and controls for -308 G>A (OR = 1.5, 95% CI = 1.07-2.19, P < 0.02) and -238 G>A (OR=1.6, 95% CI = 1.06-2.44, P = 0.02) genotype. Moreover, the severity of acne was significantly associated with TNF genotype (TNF -308 G>A: χ² = 34.6, P < 0.001; TNF -238 G>AL χ² = 12.9, P < 0.01). CONCLUSION Our data suggest that the TNF -308 G>A and TNF -238 G>A SNPs may contribute to the pathogenesis of acne in the study population. Furthermore, patients with severe acne showed an increased frequency of mutant TNF genotypes at -308 and -238 compared with patients with less severe acne.
Collapse
Affiliation(s)
- N M Aisha
- Department of Biochemistry, University of Health Sciences, Lahore, Pakistan
| | - J Haroon
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - S Hussain
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - C M Tahir
- Department of Dermatology, WAPDA Hospital, Lahore, Pakistan
| | - M Ikramullah
- Department of Biochemistry, University of Health Sciences, Lahore, Pakistan
| | - H Rahim
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - N Kishwar
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - S Younis
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - M J Hassan
- Biochemistry Division, Department of Basic Health Sciences, Shifa College of Medicine, Islamabad, Pakistan
| | - Q Javed
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| |
Collapse
|
41
|
Jetley S, Rana S, Khan S, Zeeba JS, Hassan MJ, Kapoor P. Bone marrow negative visceral leishmaniasis in an adolescent male. Iran J Parasitol 2013; 8:182-5. [PMID: 23682278 PMCID: PMC3655258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Accepted: 12/14/2012] [Indexed: 11/17/2022]
Abstract
Visceral Leishmaniasis or Kala Azar is endemic in certain regions of India. In endemic areas, the constellation of fever, progressive weight loss, weakness, pronounced splenomegaly, anemia, leukopenia, and hypergammaglobulinemia is highly suggestive of visceral leishmaniasis. Demonstration of the parasite in liver, splenic or bone marrow aspirates is confirmatory. We present a case in which Leishmania donovani (LD) bodies were demonstrated on splenic aspirate. We were unable to demonstrate LD bodies on bone marrow aspiration.
Collapse
Affiliation(s)
- S Jetley
- Department of Pathology, Hamdard Institute of Medical Sciences and Research, New Delhi, 110062, India,Department of Medicine, Hamdard Institute of Medical Sciences and Research, New Delhi, 110062, India
| | - S Rana
- Department of Pathology, Hamdard Institute of Medical Sciences and Research, New Delhi, 110062, India,Department of Medicine, Hamdard Institute of Medical Sciences and Research, New Delhi, 110062, India,Corresponding author:Tel.: +011-26059688,
| | - S Khan
- Department of Pathology, Hamdard Institute of Medical Sciences and Research, New Delhi, 110062, India,Department of Medicine, Hamdard Institute of Medical Sciences and Research, New Delhi, 110062, India
| | - JS Zeeba
- Department of Pathology, Hamdard Institute of Medical Sciences and Research, New Delhi, 110062, India,Department of Medicine, Hamdard Institute of Medical Sciences and Research, New Delhi, 110062, India
| | - MJ Hassan
- Department of Pathology, Hamdard Institute of Medical Sciences and Research, New Delhi, 110062, India,Department of Medicine, Hamdard Institute of Medical Sciences and Research, New Delhi, 110062, India
| | - P Kapoor
- Department of Pathology, Hamdard Institute of Medical Sciences and Research, New Delhi, 110062, India,Department of Medicine, Hamdard Institute of Medical Sciences and Research, New Delhi, 110062, India
| |
Collapse
|
42
|
Kousar R, Hassan MJ, Khan B, Basit S, Mahmood S, Mir A, Ahmad W, Ansar M. Mutations in WDR62 gene in Pakistani families with autosomal recessive primary microcephaly. BMC Neurol 2011; 11:119. [PMID: 21961505 PMCID: PMC3196702 DOI: 10.1186/1471-2377-11-119] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Accepted: 10/01/2011] [Indexed: 11/30/2022] Open
Abstract
Background Autosomal recessive primary microcephaly is a disorder of neurogenic mitosis that causes reduction in brain size. It is a rare heterogeneous condition with seven causative genes reported to date. Mutations in WD repeat protein 62 are associated with autosomal recessive primary microcephaly with cortical malformations. This study was initiated to screen WDR62 mutations in four consanguineous Pakistani families with autosomal recessive primary microcephaly. Methods As part of a large study to detect the genetic basis of primary microcephaly in Pakistan, homozygosity mapping and DNA sequencing was used to explore the genetic basis of autosomal recessive primary microcephaly in four families. Results Four out of 100 families recruited in the study revealed linkage to the MCPH2 locus on chromosome 19, which harbor WDR62 gene. DNA sequencing in these MCPH2 linked families result in the identification of a novel nonsense mutation (p.Q648X) and three previously known mutations. Conclusion Our data indicate that WDR62 mutations cause about 4% of autosomal recessive primary microcephaly in Pakistan.
Collapse
Affiliation(s)
- Rizwana Kousar
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | | | | | | | | | | | | | | |
Collapse
|
43
|
Wasif N, Tariq M, Ali G, Hassan MJ, Ahmad W. A novel splice site mutation in the EDAR gene underlies autosomal recessive hypohidrotic ectodermal dysplasia in a Pakistani family. Pediatr Dermatol 2010; 27:106-8. [PMID: 20199431 DOI: 10.1111/j.1525-1470.2009.01062.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hypohidrotic ectodermal dysplasia is a rare congenital disorder that results in abnormalities in the structures of ectodermal origin: hair, teeth, and eccrine sweat glands. DNA sequence analysis of EDAR gene in a Pakistani family, demonstrating autosomal recessive form of hypohidrotic ectodermal dysplasia, identified a novel homozygous mutation affecting splice donor site of exon 5 [IVS5+1G > or = C] of the gene.
Collapse
Affiliation(s)
- Naveed Wasif
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | | | | | | | | |
Collapse
|
44
|
Abstract
Leiomyoma is a benign tumor of smooth muscles. Leiomyoma originating from the scrotum is a rare entity. We report here a case of 50-year-old male who presented with a 4-cm lump in the left side of scrotum. Clinically, it was provisionally diagnosed as sebaceous cyst and was excised. The histopathology showed findings consistent with leiomyoma. There was no cytological atypia or mitosis. The final diagnosis of solitary leiomyoma of scrotum was given. The patient was followed up regularly and is doing fine for last 4 months.
Collapse
Affiliation(s)
- R K Sherwani
- Department of Pathology, JNMCH, Aligarh Muslim University, Aligarh, Uttar Pradesh, India.
| | | | | | | | | | | |
Collapse
|
45
|
Gul A, Tariq M, Khan MN, Hassan MJ, Ali G, Ahmad W. Novel protein-truncating mutations in the ASPM gene in families with autosomal recessive primary microcephaly. J Neurogenet 2008; 21:153-63. [PMID: 17849285 DOI: 10.1080/01677060701508594] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Autosomal recessive primary microcephaly (MCPH) is a neurodevelopmental disorder that causes reduction in brain size. Individuals affected with the disorder show a small but architecturally normal cerebral cortex and are associated with mental retardation of mild-to severe form. MCPH is genetically heterogeneous with six loci, and four genes have been identified so far. Homozygous mutations in the ASPM gene, located at MCPH5 locus on chromosome 1q31, are the most common cause of MCPH particularly in the Pakistani population. In the present study, we have ascertained ten Pakistani and one Kashmiri family with primary microcephaly. We screened for potential mutations of the ASPM gene in seven consanguineous families (six Pakistani and one Kashmiri) linked to MCPH5 locus. Two previously reported (8508delGA, W1326X) and four novel sequence variants (Y1712X, I1717X, Y3353X, R3244X) were detected and all were predicted to be protein truncating. The degree of mental retardation in the affected individuals of the seven families varied from mild to moderate, and was not dependent on the location of mutations in the ASPM gene.
Collapse
Affiliation(s)
- Asma Gul
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | | | | | | | | | | |
Collapse
|
46
|
Bhatti A, Lee K, McDonald ML, Hassan MJ, Gutala R, Ansar M, Ahmad W, Leal SM. Mapping of a new autosomal recessive non-syndromic hearing impairment locus (DFNB45) to chromosome 1q43-q44. Clin Genet 2008; 73:395-8. [PMID: 18325041 DOI: 10.1111/j.1399-0004.2008.00976.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
47
|
Hassan MJ, Chishti MS, Jamal SM, Tariq M, Ahmad W. A syndromic form of autosomal recessive congenital microcephaly (Jawad syndrome) maps to chromosome 18p11.22-q11.2. Hum Genet 2007; 123:77-82. [PMID: 18071751 DOI: 10.1007/s00439-007-0452-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2007] [Accepted: 12/02/2007] [Indexed: 10/22/2022]
Abstract
We report a consanguineous Pakistani family with seven affected individuals showing a syndromic form of congenital microcephaly. Clinical features of affected individuals include congenital microcephaly with sharply slopping forehead, moderate to severe mental retardation, anonychia congenita, and digital malformations. By screening human genome with microsatellite markers, this autosomal recessive condition was mapped to a 25.2 cM interval between markers D18S1150 and D18S1100 on chromosome 18p11.22-q12.3. However, the region of continuous homozygosity between markers D18S1150 and D18S997 spanning 15.33 cM, probably define the most likely candidate region for this condition. This region encompasses a physical distance of 12.03 Mb. The highest two-point LOD score of 3.03 was obtained with a marker D18S1104 and multipoint score reached a maximum of 3.43 with several markers. Six candidate genes, CEP76, ESCO1, SEH1L, TUBB6, ZNF519, and PTPN2 were sequenced, and were found to be negative for functional sequence variants.
Collapse
Affiliation(s)
- Muhammad Jawad Hassan
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
| | | | | | | | | |
Collapse
|
48
|
Hassan MJ, Khurshid M, Azeem Z, John P, Ali G, Chishti MS, Ahmad W. Previously described sequence variant in CDK5RAP2 gene in a Pakistani family with autosomal recessive primary microcephaly. BMC Med Genet 2007; 8:58. [PMID: 17764569 PMCID: PMC2072945 DOI: 10.1186/1471-2350-8-58] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2007] [Accepted: 09/01/2007] [Indexed: 11/10/2022]
Abstract
Background Autosomal Recessive Primary Microcephaly (MCPH) is a disorder of neurogenic mitosis. MCPH leads to reduced cerebral cortical volume and hence, reduced head circumference associated with mental retardation of variable degree. Genetic heterogeneity is well documented in patients with MCPH with six loci known, while pathogenic sequence variants in four respective genes have been identified so far. Mutations in CDK5RAP2 gene at MCPH3 locus have been least involved in causing MCPH phenotype. Methods All coding exons and exon/intron splice junctions of CDK5RAP2 gene were sequenced in affected and normal individuals of Pakistani MCPH family of Kashmiri origin, which showed linkage to MCPH3 locus on chromosome 9q33.2. Results A previously described nonsense mutation [243 T>A (S81X)] in exon 4 of CDK5RAP2 gene has been identified in the Pakistani family, presented here, with MCPH Phenotype. Genomic and cDNA sequence comparison revealed that the exact nomenclature for this mutation is 246 T>A (Y82X). Conclusion Recurrent observation of Y82X mutation in CDK5RAP2 gene in this Pakistani family may be a sign of confinement of a rare ancestral haplotype carrying this pathogenic variant within Northern Pakistani population, as this has not been reported in any other population.
Collapse
Affiliation(s)
- Muhammad Jawad Hassan
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Maryam Khurshid
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Zahid Azeem
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Peter John
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Ghazanfar Ali
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Muhammad Salman Chishti
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Wasim Ahmad
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| |
Collapse
|
49
|
Naeem M, Jelani M, Lee K, Ali G, Chishti MS, Wali A, Gul A, John P, Hassan MJ, Leal SM, Ahmad W. Ectodermal dysplasia of hair and nail type: mapping of a novel locus to chromosome 17p12-q21.2. Br J Dermatol 2007; 155:1184-90. [PMID: 17107387 PMCID: PMC6155468 DOI: 10.1111/j.1365-2133.2006.07509.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Ectodermal dysplasias (EDs) describe a large and complex group of disorders characterized by abnormal development of the skin and appendages (hair, nails, teeth and sweat glands). Of the approximately 200 different EDs, about 30 have been studied at the molecular level. In an effort to understand the molecular bases of ED of hair and nail type, we studied a Pakistani consanguineous family with multiple affected individuals. OBJECTIVES To localize the gene responsible for the autosomal recessive form of ED of hair and nail type. METHODS Genotyping of nine members of the family, including five affected and four normal individuals was performed using microsatellite markers mapping to candidate regions, harbouring genes involved in related phenotypes. Five epithelial keratin genes located in the candidate region were sequenced to identify the pathogenic mutation. RESULTS We mapped the disease locus to a 24.2-cM interval flanked by markers D17S839 and D17S1299 on chromosome 17p12-q21.2 (Z(max) = 4.4). DNA sequencing of five epithelial keratin candidate genes, present in the disease locus, did not reveal any pathogenic mutation in the affected individuals. CONCLUSIONS The gene for ED of hair and nail type has been mapped to chromosome 17p12-q21.2 in a Pakistani consanguineous family. Failure to detect mutations in epithelial keratin genes suggests that the mutation may lie either in regulatory regions of one of the epithelial keratin genes or in another unknown gene, located in the linkage interval, with a possible role in the development of ectodermal appendages.
Collapse
Affiliation(s)
- M Naeem
- Department of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Wali A, John P, Gul A, Lee K, Chishti MS, Ali G, Hassan MJ, Leal SM, Ahmad W. A novel locus for alopecia with mental retardation syndrome (APMR2) maps to chromosome 3q26.2-q26.31. Clin Genet 2006; 70:233-9. [PMID: 16922726 PMCID: PMC6155482 DOI: 10.1111/j.1399-0004.2006.00661.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Congenital alopecia may occur either alone or in association with ectodermal and other abnormalities. On the bases of such associations, several different syndromes featuring congenital alopecia can be distinguished. Alopecia with mental retardation syndrome (APMR) is a rare autosomal recessive disorder, clinically characterized by total or partial hair loss and mental retardation. In the present study, a five-generation Pakistani family with multiple affected individuals with APMR was ascertained. Patients in this family exhibited typical features of APMR syndrome. The disease locus was mapped to chromosome 3q26.2-q26.31 by carrying out a genome scan followed by fine mapping. A maximum two-point logarithm of odds (LOD) score of 2.93 at theta=0.0 was obtained at markers D3S3053 and D3S2309. Multipoint linkage analysis resulted in a maximum LOD score of 4.57 with several markers, which supports the linkage. The disease locus was flanked by markers D3S1564 and D3S2427, which corresponds to 9.6-cM region according to the Rutgers combined linkage-physical map of the human genome (build 35) and contains 5.6 Mb. The linkage interval of the APMR locus identified here does not overlap with the one described previously; therefore, this locus has been designated as APMR2.
Collapse
Affiliation(s)
- A Wali
- Department of Biochemistry, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | | | | | | | | | | | | | | | | |
Collapse
|